1. The problem is to find the square root of 784. 2. The square root of a number $x$ is a value $y$ such that $$y^2 = x$$. 3. To find $\sqrt{784}$, we look for a number $y$ where $$y^2 = 784$$. 4. We can try to factor 784 or recognize it as a perfect square. 5. Notice that $28 \times 28 = 784$. 6. Therefore, $$\sqrt{784} = 28$$. 7. The square root of 784 is 28.