Finding the Third Proportional to 686,626 and 1,005,359

Step by Step Solution

1. Step 1: Write the proportion equation
   686,626 : 1,005,359 = 1,005,359 : x
2. Step 2: Convert to fraction form
   686,626/1,005,359 = 1,005,359/x
3. Step 3: Cross multiply
   686,626x = 1,005,359 × 1,005,359
4. Step 4: Simplify right side
   686,626x = 1,010,746,718,881
5. Step 5: Solve for x
   x = 1,010,746,718,881/686,626
6. Step 6: Final answer
   x = 1,472,048.42