Finding the Third Proportional to 221,382.50 and 489,282

Step by Step Solution

1. Step 1: Write the proportion equation
   221,382.50 : 489,282 = 489,282 : x
2. Step 2: Convert to fraction form
   221,382.50/489,282 = 489,282/x
3. Step 3: Cross multiply
   221,382.50x = 489,282 × 489,282
4. Step 4: Simplify right side
   221,382.50x = 239,396,875,524
5. Step 5: Solve for x
   x = 239,396,875,524/221,382.50
6. Step 6: Final answer
   x = 1,081,372.17