Finding the Third Proportional to 221,952 and 485,358

Step by Step Solution

1. Step 1: Write the proportion equation
   221,952 : 485,358 = 485,358 : x
2. Step 2: Convert to fraction form
   221,952/485,358 = 485,358/x
3. Step 3: Cross multiply
   221,952x = 485,358 × 485,358
4. Step 4: Simplify right side
   221,952x = 235,572,388,164
5. Step 5: Solve for x
   x = 235,572,388,164/221,952
6. Step 6: Final answer
   x = 1,061,366.37