Question triang

Triangle $ABC$ is similar to triangle $XYZ$, where $A$, $B$, and $C$ correspond to $X$, $Y$, and $Z$, respectively. In triangle $ABC$, the length of $\overline{AB}$ is $170$ and the length of $\overline{BC}$ is $850$. In triangle $XYZ$, the length of $\overline{YZ}$ is $60$. What is the length of $\overline{XY}$?