Finding the Third Proportional to 227,724 and 489,144

Step by Step Solution

1. Step 1: Write the proportion equation
   227,724 : 489,144 = 489,144 : x
2. Step 2: Convert to fraction form
   227,724/489,144 = 489,144/x
3. Step 3: Cross multiply
   227,724x = 489,144 × 489,144
4. Step 4: Simplify right side
   227,724x = 239,261,852,736
5. Step 5: Solve for x
   x = 239,261,852,736/227,724
6. Step 6: Final answer
   x = 1,050,665.95