Finding the Third Proportional to 42,711.75 and 68,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,711.75 : 68,017.50 = 68,017.50 : x
2. Step 2: Convert to fraction form
   42,711.75/68,017.50 = 68,017.50/x
3. Step 3: Cross multiply
   42,711.75x = 68,017.50 × 68,017.50
4. Step 4: Simplify right side
   42,711.75x = 4,626,380,306.25
5. Step 5: Solve for x
   x = 4,626,380,306.25/42,711.75
6. Step 6: Final answer
   x = 108,316.34