Finding the Third Proportional to 8,487 and 10,708.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,487 : 10,708.50 = 10,708.50 : x
2. Step 2: Convert to fraction form
   8,487/10,708.50 = 10,708.50/x
3. Step 3: Cross multiply
   8,487x = 10,708.50 × 10,708.50
4. Step 4: Simplify right side
   8,487x = 114,671,972.25
5. Step 5: Solve for x
   x = 114,671,972.25/8,487
6. Step 6: Final answer
   x = 13,511.48