Finding the Third Proportional to 217,450 and 479,048

Step by Step Solution

1. Step 1: Write the proportion equation
   217,450 : 479,048 = 479,048 : x
2. Step 2: Convert to fraction form
   217,450/479,048 = 479,048/x
3. Step 3: Cross multiply
   217,450x = 479,048 × 479,048
4. Step 4: Simplify right side
   217,450x = 229,486,986,304
5. Step 5: Solve for x
   x = 229,486,986,304/217,450
6. Step 6: Final answer
   x = 1,055,355.19