Finding the Third Proportional to 138,220.50 and 301,452

Step by Step Solution

1. Step 1: Write the proportion equation
   138,220.50 : 301,452 = 301,452 : x
2. Step 2: Convert to fraction form
   138,220.50/301,452 = 301,452/x
3. Step 3: Cross multiply
   138,220.50x = 301,452 × 301,452
4. Step 4: Simplify right side
   138,220.50x = 90,873,308,304
5. Step 5: Solve for x
   x = 90,873,308,304/138,220.50
6. Step 6: Final answer
   x = 657,451.74