The 32-year-old soloed clear of the peloton with just over a quarter of the 120km race remaining.
“I'm so proud of our team,” an elated Hosking said afterwards. “The girls really rose to the occasion today and rode like they were protecting the yellow jersey.
“I've been struggling in the last few races so while third isn't the victory we had hoped for I can definitely take some kind of confidence from it going into the next two days.”
Emma Johansson has joined the black and orange team at the number one spot in the UCI Rankings after some spectacular results this spring.
The former two-time road World Champion crossed the line well clear of her nearest rival.
“I want to pay tribute to what happened in Brussels,” the Belgian Champion said. “Riding in the Belgian jersey makes me proud and sad at the same time.
Johansson won the 2014 edition of the race, which was then a World Cup
“I’m really looking forward to join my teammates again on the road,” D’hoore said. “Maybe the track worlds weren’t really what I expected but I’m still hopeful for the future.
The first gold medal of the day was awarded to Laura Trott after an astonishing performance in the women’s omnium. UCI
The first medal of the day went to Poland’s Katarzyna Pawlowska in the points race. UCI
The first world title of the day was awarded to Anastasiia Voinova (Russia) in the women’s 500 m time trial with a time of 32.959. UCI
Great Britain’s Laura Trott delighted the home crowd with a thrilling sprint finish in the women’s scratch race.
The first world champion of 2016 was crowned in the women’s individual pursuit this evening, with Australia’s Rebecca Wiasak taking home the first rainbow stripes of the week with 3:34.099. UCI