Finding the Third Proportional to 67,540 and 144,872

Step by Step Solution

1. Step 1: Write the proportion equation
   67,540 : 144,872 = 144,872 : x
2. Step 2: Convert to fraction form
   67,540/144,872 = 144,872/x
3. Step 3: Cross multiply
   67,540x = 144,872 × 144,872
4. Step 4: Simplify right side
   67,540x = 20,987,896,384
5. Step 5: Solve for x
   x = 20,987,896,384/67,540
6. Step 6: Final answer
   x = 310,747.65