Finding the Third Proportional to 90,149.25 and 140,140.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,149.25 : 140,140.50 = 140,140.50 : x
2. Step 2: Convert to fraction form
   90,149.25/140,140.50 = 140,140.50/x
3. Step 3: Cross multiply
   90,149.25x = 140,140.50 × 140,140.50
4. Step 4: Simplify right side
   90,149.25x = 19,639,359,740.25
5. Step 5: Solve for x
   x = 19,639,359,740.25/90,149.25
6. Step 6: Final answer
   x = 217,853.83