Find $x$ such that $7^{\log_x 49} = 49$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find $x$ such that $7^{\log_x 49} = 49$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
7
Find $x$ such that $7^{\log_x 49} = 49$.
train