Finding the Third Proportional to 224,280 and 489,840

Step by Step Solution

1. Step 1: Write the proportion equation
   224,280 : 489,840 = 489,840 : x
2. Step 2: Convert to fraction form
   224,280/489,840 = 489,840/x
3. Step 3: Cross multiply
   224,280x = 489,840 × 489,840
4. Step 4: Simplify right side
   224,280x = 239,943,225,600
5. Step 5: Solve for x
   x = 239,943,225,600/224,280
6. Step 6: Final answer
   x = 1,069,837.82