Amazonas (Brazil) is 46% larger than Ontario (Canada).
Amazonas is a state of Brazil, located in the northwestern corner of the country. It is the largest Brazilian State by area and the 9th largest country subdivision in the world. Neighbouring states are Roraima, Pará, Mato Grosso, Rondônia, and Acre. It also borders Peru, Colombia and Venezuela. Wikipedia
Ontario is one of the ten provinces of Canada, located in east-central Canada. It is Canada's most populous province by a large margin, accounting for nearly 40% of all Canadians, and is the second largest province in total area. Wikipedia