Finding the Third Proportional to 217,630 and 479,396

Step by Step Solution

1. Step 1: Write the proportion equation
   217,630 : 479,396 = 479,396 : x
2. Step 2: Convert to fraction form
   217,630/479,396 = 479,396/x
3. Step 3: Cross multiply
   217,630x = 479,396 × 479,396
4. Step 4: Simplify right side
   217,630x = 229,820,524,816
5. Step 5: Solve for x
   x = 229,820,524,816/217,630
6. Step 6: Final answer
   x = 1,056,014.91