Finding the Third Proportional to 86,691.50 and 131,768.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,691.50 : 131,768.50 = 131,768.50 : x
2. Step 2: Convert to fraction form
   86,691.50/131,768.50 = 131,768.50/x
3. Step 3: Cross multiply
   86,691.50x = 131,768.50 × 131,768.50
4. Step 4: Simplify right side
   86,691.50x = 17,362,937,592.25
5. Step 5: Solve for x
   x = 17,362,937,592.25/86,691.50
6. Step 6: Final answer
   x = 200,284.20