Finding the Third Proportional to 55,690.50 and 86,274.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,690.50 : 86,274.75 = 86,274.75 : x
2. Step 2: Convert to fraction form
   55,690.50/86,274.75 = 86,274.75/x
3. Step 3: Cross multiply
   55,690.50x = 86,274.75 × 86,274.75
4. Step 4: Simplify right side
   55,690.50x = 7,443,332,487.56
5. Step 5: Solve for x
   x = 7,443,332,487.56/55,690.50
6. Step 6: Final answer
   x = 133,655.34