Finding the Third Proportional to 8,682 and 13,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,682 : 13,087.50 = 13,087.50 : x
2. Step 2: Convert to fraction form
   8,682/13,087.50 = 13,087.50/x
3. Step 3: Cross multiply
   8,682x = 13,087.50 × 13,087.50
4. Step 4: Simplify right side
   8,682x = 171,282,656.25
5. Step 5: Solve for x
   x = 171,282,656.25/8,682
6. Step 6: Final answer
   x = 19,728.48