Finding the Third Proportional to 89,940 and 129,937.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,940 : 129,937.50 = 129,937.50 : x
2. Step 2: Convert to fraction form
   89,940/129,937.50 = 129,937.50/x
3. Step 3: Cross multiply
   89,940x = 129,937.50 × 129,937.50
4. Step 4: Simplify right side
   89,940x = 16,883,753,906.25
5. Step 5: Solve for x
   x = 16,883,753,906.25/89,940
6. Step 6: Final answer
   x = 187,722.41