Finding the Third Proportional to 218,952 and 478,800

Step by Step Solution

1. Step 1: Write the proportion equation
   218,952 : 478,800 = 478,800 : x
2. Step 2: Convert to fraction form
   218,952/478,800 = 478,800/x
3. Step 3: Cross multiply
   218,952x = 478,800 × 478,800
4. Step 4: Simplify right side
   218,952x = 229,249,440,000
5. Step 5: Solve for x
   x = 229,249,440,000/218,952
6. Step 6: Final answer
   x = 1,047,030.58