Finding the Third Proportional to 221,510 and 472,016

Step by Step Solution

1. Step 1: Write the proportion equation
   221,510 : 472,016 = 472,016 : x
2. Step 2: Convert to fraction form
   221,510/472,016 = 472,016/x
3. Step 3: Cross multiply
   221,510x = 472,016 × 472,016
4. Step 4: Simplify right side
   221,510x = 222,799,104,256
5. Step 5: Solve for x
   x = 222,799,104,256/221,510
6. Step 6: Final answer
   x = 1,005,819.62