Finding the Third Proportional to 42,724.34 and 66,162.45

Step by Step Solution

1. Step 1: Write the proportion equation
   42,724.34 : 66,162.45 = 66,162.45 : x
2. Step 2: Convert to fraction form
   42,724.34/66,162.45 = 66,162.45/x
3. Step 3: Cross multiply
   42,724.34x = 66,162.45 × 66,162.45
4. Step 4: Simplify right side
   42,724.34x = 4,377,469,169.73
5. Step 5: Solve for x
   x = 4,377,469,169.73/42,724.34
6. Step 6: Final answer
   x = 102,458.45