Finding the Third Proportional to 8,591 and 12,522

Step by Step Solution

1. Step 1: Write the proportion equation
   8,591 : 12,522 = 12,522 : x
2. Step 2: Convert to fraction form
   8,591/12,522 = 12,522/x
3. Step 3: Cross multiply
   8,591x = 12,522 × 12,522
4. Step 4: Simplify right side
   8,591x = 156,800,484
5. Step 5: Solve for x
   x = 156,800,484/8,591
6. Step 6: Final answer
   x = 18,251.72