Finding the Third Proportional to 138,422 and 301,144

Step by Step Solution

1. Step 1: Write the proportion equation
   138,422 : 301,144 = 301,144 : x
2. Step 2: Convert to fraction form
   138,422/301,144 = 301,144/x
3. Step 3: Cross multiply
   138,422x = 301,144 × 301,144
4. Step 4: Simplify right side
   138,422x = 90,687,708,736
5. Step 5: Solve for x
   x = 90,687,708,736/138,422
6. Step 6: Final answer
   x = 655,153.87