Finding the Third Proportional to 71,128.13 and 152,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,128.13 : 152,401.50 = 152,401.50 : x
2. Step 2: Convert to fraction form
   71,128.13/152,401.50 = 152,401.50/x
3. Step 3: Cross multiply
   71,128.13x = 152,401.50 × 152,401.50
4. Step 4: Simplify right side
   71,128.13x = 23,226,217,202.25
5. Step 5: Solve for x
   x = 23,226,217,202.25/71,128.13
6. Step 6: Final answer
   x = 326,540.55