Finding the Third Proportional to 55,811.25 and 86,308.88

Step by Step Solution

1. Step 1: Write the proportion equation
   55,811.25 : 86,308.88 = 86,308.88 : x
2. Step 2: Convert to fraction form
   55,811.25/86,308.88 = 86,308.88/x
3. Step 3: Cross multiply
   55,811.25x = 86,308.88 × 86,308.88
4. Step 4: Simplify right side
   55,811.25x = 7,449,221,903.77
5. Step 5: Solve for x
   x = 7,449,221,903.77/55,811.25
6. Step 6: Final answer
   x = 133,471.69