Finding the Third Proportional to 13,413.50 and 19,708.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,413.50 : 19,708.75 = 19,708.75 : x
2. Step 2: Convert to fraction form
   13,413.50/19,708.75 = 19,708.75/x
3. Step 3: Cross multiply
   13,413.50x = 19,708.75 × 19,708.75
4. Step 4: Simplify right side
   13,413.50x = 388,434,826.56
5. Step 5: Solve for x
   x = 388,434,826.56/13,413.50
6. Step 6: Final answer
   x = 28,958.50