Finding the Third Proportional to 2,487.38 and 5,413.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.38 : 5,413.88 = 5,413.88 : x
2. Step 2: Convert to fraction form
   2,487.38/5,413.88 = 5,413.88/x
3. Step 3: Cross multiply
   2,487.38x = 5,413.88 × 5,413.88
4. Step 4: Simplify right side
   2,487.38x = 29,310,042.52
5. Step 5: Solve for x
   x = 29,310,042.52/2,487.38
6. Step 6: Final answer
   x = 11,783.52