Finding the Third Proportional to 432,366 and 690,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   432,366 : 690,700.50 = 690,700.50 : x
2. Step 2: Convert to fraction form
   432,366/690,700.50 = 690,700.50/x
3. Step 3: Cross multiply
   432,366x = 690,700.50 × 690,700.50
4. Step 4: Simplify right side
   432,366x = 477,067,180,700.25
5. Step 5: Solve for x
   x = 477,067,180,700.25/432,366
6. Step 6: Final answer
   x = 1,103,387.36