Finding the Third Proportional to 8,586 and 13,380

Step by Step Solution

1. Step 1: Write the proportion equation
   8,586 : 13,380 = 13,380 : x
2. Step 2: Convert to fraction form
   8,586/13,380 = 13,380/x
3. Step 3: Cross multiply
   8,586x = 13,380 × 13,380
4. Step 4: Simplify right side
   8,586x = 179,024,400
5. Step 5: Solve for x
   x = 179,024,400/8,586
6. Step 6: Final answer
   x = 20,850.73