Finding the Third Proportional to 217,012 and 475,398

Step by Step Solution

1. Step 1: Write the proportion equation
   217,012 : 475,398 = 475,398 : x
2. Step 2: Convert to fraction form
   217,012/475,398 = 475,398/x
3. Step 3: Cross multiply
   217,012x = 475,398 × 475,398
4. Step 4: Simplify right side
   217,012x = 226,003,258,404
5. Step 5: Solve for x
   x = 226,003,258,404/217,012
6. Step 6: Final answer
   x = 1,041,432.08