Finding the Third Proportional to 221,810 and 485,598

Step by Step Solution

1. Step 1: Write the proportion equation
   221,810 : 485,598 = 485,598 : x
2. Step 2: Convert to fraction form
   221,810/485,598 = 485,598/x
3. Step 3: Cross multiply
   221,810x = 485,598 × 485,598
4. Step 4: Simplify right side
   221,810x = 235,805,417,604
5. Step 5: Solve for x
   x = 235,805,417,604/221,810
6. Step 6: Final answer
   x = 1,063,096.42