Finding the Third Proportional to 223,687.50 and 489,900

Step by Step Solution

1. Step 1: Write the proportion equation
   223,687.50 : 489,900 = 489,900 : x
2. Step 2: Convert to fraction form
   223,687.50/489,900 = 489,900/x
3. Step 3: Cross multiply
   223,687.50x = 489,900 × 489,900
4. Step 4: Simplify right side
   223,687.50x = 240,002,010,000
5. Step 5: Solve for x
   x = 240,002,010,000/223,687.50
6. Step 6: Final answer
   x = 1,072,934.38