Finding the Third Proportional to 688,304 and 1,042,816

Step by Step Solution

1. Step 1: Write the proportion equation
   688,304 : 1,042,816 = 1,042,816 : x
2. Step 2: Convert to fraction form
   688,304/1,042,816 = 1,042,816/x
3. Step 3: Cross multiply
   688,304x = 1,042,816 × 1,042,816
4. Step 4: Simplify right side
   688,304x = 1,087,465,209,856
5. Step 5: Solve for x
   x = 1,087,465,209,856/688,304
6. Step 6: Final answer
   x = 1,579,919.93