Finding the Third Proportional to 42,397.50 and 67,119.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,397.50 : 67,119.75 = 67,119.75 : x
2. Step 2: Convert to fraction form
   42,397.50/67,119.75 = 67,119.75/x
3. Step 3: Cross multiply
   42,397.50x = 67,119.75 × 67,119.75
4. Step 4: Simplify right side
   42,397.50x = 4,505,060,840.06
5. Step 5: Solve for x
   x = 4,505,060,840.06/42,397.50
6. Step 6: Final answer
   x = 106,257.70