Finding the Third Proportional to 85,945.88 and 131,143.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,945.88 : 131,143.50 = 131,143.50 : x
2. Step 2: Convert to fraction form
   85,945.88/131,143.50 = 131,143.50/x
3. Step 3: Cross multiply
   85,945.88x = 131,143.50 × 131,143.50
4. Step 4: Simplify right side
   85,945.88x = 17,198,617,592.25
5. Step 5: Solve for x
   x = 17,198,617,592.25/85,945.88
6. Step 6: Final answer
   x = 200,109.87