Finding the Third Proportional to 209,440 and 457,972

Step by Step Solution

1. Step 1: Write the proportion equation
   209,440 : 457,972 = 457,972 : x
2. Step 2: Convert to fraction form
   209,440/457,972 = 457,972/x
3. Step 3: Cross multiply
   209,440x = 457,972 × 457,972
4. Step 4: Simplify right side
   209,440x = 209,738,352,784
5. Step 5: Solve for x
   x = 209,738,352,784/209,440
6. Step 6: Final answer
   x = 1,001,424.53