Finding the Third Proportional to 42,622.88 and 66,715.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,622.88 : 66,715.31 = 66,715.31 : x
2. Step 2: Convert to fraction form
   42,622.88/66,715.31 = 66,715.31/x
3. Step 3: Cross multiply
   42,622.88x = 66,715.31 × 66,715.31
4. Step 4: Simplify right side
   42,622.88x = 4,450,932,921.97
5. Step 5: Solve for x
   x = 4,450,932,921.97/42,622.88
6. Step 6: Final answer
   x = 104,425.92