Finding the Third Proportional to 219,632 and 479,540

Step by Step Solution

1. Step 1: Write the proportion equation
   219,632 : 479,540 = 479,540 : x
2. Step 2: Convert to fraction form
   219,632/479,540 = 479,540/x
3. Step 3: Cross multiply
   219,632x = 479,540 × 479,540
4. Step 4: Simplify right side
   219,632x = 229,958,611,600
5. Step 5: Solve for x
   x = 229,958,611,600/219,632
6. Step 6: Final answer
   x = 1,047,017.79