Finding the Third Proportional to 138,469 and 301,238

Step by Step Solution

1. Step 1: Write the proportion equation
   138,469 : 301,238 = 301,238 : x
2. Step 2: Convert to fraction form
   138,469/301,238 = 301,238/x
3. Step 3: Cross multiply
   138,469x = 301,238 × 301,238
4. Step 4: Simplify right side
   138,469x = 90,744,332,644
5. Step 5: Solve for x
   x = 90,744,332,644/138,469
6. Step 6: Final answer
   x = 655,340.42