Finding the Third Proportional to 51,612 and 72,681

Step by Step Solution

1. Step 1: Write the proportion equation
   51,612 : 72,681 = 72,681 : x
2. Step 2: Convert to fraction form
   51,612/72,681 = 72,681/x
3. Step 3: Cross multiply
   51,612x = 72,681 × 72,681
4. Step 4: Simplify right side
   51,612x = 5,282,527,761
5. Step 5: Solve for x
   x = 5,282,527,761/51,612
6. Step 6: Final answer
   x = 102,350.77