Finding the Third Proportional to 434,131.31 and 619,273.69

Step by Step Solution

1. Step 1: Write the proportion equation
   434,131.31 : 619,273.69 = 619,273.69 : x
2. Step 2: Convert to fraction form
   434,131.31/619,273.69 = 619,273.69/x
3. Step 3: Cross multiply
   434,131.31x = 619,273.69 × 619,273.69
4. Step 4: Simplify right side
   434,131.31x = 383,499,900,029.85
5. Step 5: Solve for x
   x = 383,499,900,029.85/434,131.31
6. Step 6: Final answer
   x = 883,373.05