Finding the Third Proportional to 85,810.50 and 131,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,810.50 : 131,269.50 = 131,269.50 : x
2. Step 2: Convert to fraction form
   85,810.50/131,269.50 = 131,269.50/x
3. Step 3: Cross multiply
   85,810.50x = 131,269.50 × 131,269.50
4. Step 4: Simplify right side
   85,810.50x = 17,231,681,630.25
5. Step 5: Solve for x
   x = 17,231,681,630.25/85,810.50
6. Step 6: Final answer
   x = 200,810.88