Finding the Third Proportional to 223,146 and 485,664

Step by Step Solution

1. Step 1: Write the proportion equation
   223,146 : 485,664 = 485,664 : x
2. Step 2: Convert to fraction form
   223,146/485,664 = 485,664/x
3. Step 3: Cross multiply
   223,146x = 485,664 × 485,664
4. Step 4: Simplify right side
   223,146x = 235,869,520,896
5. Step 5: Solve for x
   x = 235,869,520,896/223,146
6. Step 6: Final answer
   x = 1,057,018.82