Finding the Third Proportional to 329,155.50 and 491,580

Step by Step Solution

1. Step 1: Write the proportion equation
   329,155.50 : 491,580 = 491,580 : x
2. Step 2: Convert to fraction form
   329,155.50/491,580 = 491,580/x
3. Step 3: Cross multiply
   329,155.50x = 491,580 × 491,580
4. Step 4: Simplify right side
   329,155.50x = 241,650,896,400
5. Step 5: Solve for x
   x = 241,650,896,400/329,155.50
6. Step 6: Final answer
   x = 734,154.21