It says million

Relevant wiki: Properties of Logarithms - Basic

We can rewrite the left hand side as

$\frac{\log (10^6)}{\log x} = 6$

We can rearrange the terms to make $\log x$ the subject of the formula.

$\log x = \frac{1}{6} \times \log (10^6)$

Using properties of logarithms , we get $\log x = \log 10$ , therefore $x = 10$ . $_\square$

$\log_x (10^{6}) = 6$

$\implies x^{6} = 10^{6}$

$x = 10$

Therefore, $x$ equals $\boxed {10.}$