Finding the Third Proportional to 42,160.50 and 66,744

Step by Step Solution

1. Step 1: Write the proportion equation
   42,160.50 : 66,744 = 66,744 : x
2. Step 2: Convert to fraction form
   42,160.50/66,744 = 66,744/x
3. Step 3: Cross multiply
   42,160.50x = 66,744 × 66,744
4. Step 4: Simplify right side
   42,160.50x = 4,454,761,536
5. Step 5: Solve for x
   x = 4,454,761,536/42,160.50
6. Step 6: Final answer
   x = 105,661.97