Find \(x\).
Use the 45-45-90 triangle rule.
In a 45-45-90 triangle, the two legs are congruent, and the hypotenuse is \(\sqrt{2}\) times the length of each leg. In this case, the length of the leg is \(\sqrt{6}\), and the hypotenuse is \(x\). So, \(x = \sqrt{6} \times \sqrt{2} = \sqrt{12} = 2\sqrt{3}\).
\(\boxed{x = 2\sqrt{3}}\)