if the angles of a triangle are 90,60 and 30, the side opposite the 90 is 90, and the side opposite the 30 is 57, then what is the side opposite the 60?

In a 30 60 90 triangle the ratio of the sides should be x: x root 3: 2x respectively so if the side across from the 90 degree angle is 90 then the short side should be 45, and the other side should be 45 root 3.