Finding the Third Proportional to 55,687.50 and 86,168.81

Step by Step Solution

1. Step 1: Write the proportion equation
   55,687.50 : 86,168.81 = 86,168.81 : x
2. Step 2: Convert to fraction form
   55,687.50/86,168.81 = 86,168.81/x
3. Step 3: Cross multiply
   55,687.50x = 86,168.81 × 86,168.81
4. Step 4: Simplify right side
   55,687.50x = 7,425,064,247.66
5. Step 5: Solve for x
   x = 7,425,064,247.66/55,687.50
6. Step 6: Final answer
   x = 133,334.49