\[\frac{2}{5}\sqrt{62\frac{1}{2}} = \frac{4}{3}\sqrt{5\frac{5}{8}}\text{\ \ }\]
\[\frac{2}{5}\sqrt{62\frac{1}{2}} = \sqrt{\frac{4}{25} \cdot \frac{125}{2}} = \sqrt{10};\]
\[\frac{4}{3}\sqrt{5\frac{5}{8}} = \sqrt{\frac{16}{9} \cdot \frac{45}{8}} = \sqrt{10}.\]