Finding the Third Proportional to 147,139.88 and 327,591

Step by Step Solution

1. Step 1: Write the proportion equation
   147,139.88 : 327,591 = 327,591 : x
2. Step 2: Convert to fraction form
   147,139.88/327,591 = 327,591/x
3. Step 3: Cross multiply
   147,139.88x = 327,591 × 327,591
4. Step 4: Simplify right side
   147,139.88x = 107,315,863,281
5. Step 5: Solve for x
   x = 107,315,863,281/147,139.88
6. Step 6: Final answer
   x = 729,345.89