Finding the Third Proportional to 217,494 and 479,132

Step by Step Solution

1. Step 1: Write the proportion equation
   217,494 : 479,132 = 479,132 : x
2. Step 2: Convert to fraction form
   217,494/479,132 = 479,132/x
3. Step 3: Cross multiply
   217,494x = 479,132 × 479,132
4. Step 4: Simplify right side
   217,494x = 229,567,473,424
5. Step 5: Solve for x
   x = 229,567,473,424/217,494
6. Step 6: Final answer
   x = 1,055,511.75