Finding the Third Proportional to 217,098 and 472,428

Step by Step Solution

1. Step 1: Write the proportion equation
   217,098 : 472,428 = 472,428 : x
2. Step 2: Convert to fraction form
   217,098/472,428 = 472,428/x
3. Step 3: Cross multiply
   217,098x = 472,428 × 472,428
4. Step 4: Simplify right side
   217,098x = 223,188,215,184
5. Step 5: Solve for x
   x = 223,188,215,184/217,098
6. Step 6: Final answer
   x = 1,028,052.84