Finding the Third Proportional to 138,656 and 301,600

Step by Step Solution

1. Step 1: Write the proportion equation
   138,656 : 301,600 = 301,600 : x
2. Step 2: Convert to fraction form
   138,656/301,600 = 301,600/x
3. Step 3: Cross multiply
   138,656x = 301,600 × 301,600
4. Step 4: Simplify right side
   138,656x = 90,962,560,000
5. Step 5: Solve for x
   x = 90,962,560,000/138,656
6. Step 6: Final answer
   x = 656,030.46