Finding the Third Proportional to 220,810 and 478,962

Step by Step Solution

1. Step 1: Write the proportion equation
   220,810 : 478,962 = 478,962 : x
2. Step 2: Convert to fraction form
   220,810/478,962 = 478,962/x
3. Step 3: Cross multiply
   220,810x = 478,962 × 478,962
4. Step 4: Simplify right side
   220,810x = 229,404,597,444
5. Step 5: Solve for x
   x = 229,404,597,444/220,810
6. Step 6: Final answer
   x = 1,038,923.04