Finding the Third Proportional to 224,830 and 489,318

Step by Step Solution

1. Step 1: Write the proportion equation
   224,830 : 489,318 = 489,318 : x
2. Step 2: Convert to fraction form
   224,830/489,318 = 489,318/x
3. Step 3: Cross multiply
   224,830x = 489,318 × 489,318
4. Step 4: Simplify right side
   224,830x = 239,432,105,124
5. Step 5: Solve for x
   x = 239,432,105,124/224,830
6. Step 6: Final answer
   x = 1,064,947.32