Finding the Third Proportional to 62,728.88 and 89,422.25

Step by Step Solution

1. Step 1: Write the proportion equation
   62,728.88 : 89,422.25 = 89,422.25 : x
2. Step 2: Convert to fraction form
   62,728.88/89,422.25 = 89,422.25/x
3. Step 3: Cross multiply
   62,728.88x = 89,422.25 × 89,422.25
4. Step 4: Simplify right side
   62,728.88x = 7,996,338,795.06
5. Step 5: Solve for x
   x = 7,996,338,795.06/62,728.88
6. Step 6: Final answer
   x = 127,474.61