Finding the Third Proportional to 66,555 and 146,499

Step by Step Solution

1. Step 1: Write the proportion equation
   66,555 : 146,499 = 146,499 : x
2. Step 2: Convert to fraction form
   66,555/146,499 = 146,499/x
3. Step 3: Cross multiply
   66,555x = 146,499 × 146,499
4. Step 4: Simplify right side
   66,555x = 21,461,957,001
5. Step 5: Solve for x
   x = 21,461,957,001/66,555
6. Step 6: Final answer
   x = 322,469.49