Final answer:
Buddhism is the 3rd smallest major religion in terms of the number of followers, with approximately 950 million followers globally.
Step-by-step explanation:
Among the five major religions, the 3rd smallest in terms of the number of followers is Buddhism. Although Buddhism has a significant number of followers in countries like China, Japan, Thailand, and Myanmar, it has approximately 950 million followers globally, making it the 3rd smallest compared to Christianity, Islam, and Hinduism. It is worth noting that the population of followers for each religion may vary depending on different sources and demographic factors.