Finding the Third Proportional to 217,828 and 469,028

Step by Step Solution

1. Step 1: Write the proportion equation
   217,828 : 469,028 = 469,028 : x
2. Step 2: Convert to fraction form
   217,828/469,028 = 469,028/x
3. Step 3: Cross multiply
   217,828x = 469,028 × 469,028
4. Step 4: Simplify right side
   217,828x = 219,987,264,784
5. Step 5: Solve for x
   x = 219,987,264,784/217,828
6. Step 6: Final answer
   x = 1,009,912.71