Finding the Third Proportional to 142,728 and 337,540

Step by Step Solution

1. Step 1: Write the proportion equation
   142,728 : 337,540 = 337,540 : x
2. Step 2: Convert to fraction form
   142,728/337,540 = 337,540/x
3. Step 3: Cross multiply
   142,728x = 337,540 × 337,540
4. Step 4: Simplify right side
   142,728x = 113,933,251,600
5. Step 5: Solve for x
   x = 113,933,251,600/142,728
6. Step 6: Final answer
   x = 798,254.38