Finding the Third Proportional to 142,686 and 337,440

Step by Step Solution

1. Step 1: Write the proportion equation
   142,686 : 337,440 = 337,440 : x
2. Step 2: Convert to fraction form
   142,686/337,440 = 337,440/x
3. Step 3: Cross multiply
   142,686x = 337,440 × 337,440
4. Step 4: Simplify right side
   142,686x = 113,865,753,600
5. Step 5: Solve for x
   x = 113,865,753,600/142,686
6. Step 6: Final answer
   x = 798,016.30