Finding the Third Proportional to 429,139.27 and 649,232.72

Step by Step Solution

1. Step 1: Write the proportion equation
   429,139.27 : 649,232.72 = 649,232.72 : x
2. Step 2: Convert to fraction form
   429,139.27/649,232.72 = 649,232.72/x
3. Step 3: Cross multiply
   429,139.27x = 649,232.72 × 649,232.72
4. Step 4: Simplify right side
   429,139.27x = 421,503,123,095.52
5. Step 5: Solve for x
   x = 421,503,123,095.52/429,139.27
6. Step 6: Final answer
   x = 982,205.91