Finding the Third Proportional to 221,676 and 480,396

Step by Step Solution

1. Step 1: Write the proportion equation
   221,676 : 480,396 = 480,396 : x
2. Step 2: Convert to fraction form
   221,676/480,396 = 480,396/x
3. Step 3: Cross multiply
   221,676x = 480,396 × 480,396
4. Step 4: Simplify right side
   221,676x = 230,780,316,816
5. Step 5: Solve for x
   x = 230,780,316,816/221,676
6. Step 6: Final answer
   x = 1,041,070.38