Finding the Third Proportional to 5,911 and 12,505

Step by Step Solution

1. Step 1: Write the proportion equation
   5,911 : 12,505 = 12,505 : x
2. Step 2: Convert to fraction form
   5,911/12,505 = 12,505/x
3. Step 3: Cross multiply
   5,911x = 12,505 × 12,505
4. Step 4: Simplify right side
   5,911x = 156,375,025
5. Step 5: Solve for x
   x = 156,375,025/5,911
6. Step 6: Final answer
   x = 26,454.92