Finding the Third Proportional to 429,139.69 and 649,233.56

Step by Step Solution

1. Step 1: Write the proportion equation
   429,139.69 : 649,233.56 = 649,233.56 : x
2. Step 2: Convert to fraction form
   429,139.69/649,233.56 = 649,233.56/x
3. Step 3: Cross multiply
   429,139.69x = 649,233.56 × 649,233.56
4. Step 4: Simplify right side
   429,139.69x = 421,504,218,676.44
5. Step 5: Solve for x
   x = 421,504,218,676.44/429,139.69
6. Step 6: Final answer
   x = 982,207.50