Finding the Third Proportional to 8,315 and 20,108

Step by Step Solution

1. Step 1: Write the proportion equation
   8,315 : 20,108 = 20,108 : x
2. Step 2: Convert to fraction form
   8,315/20,108 = 20,108/x
3. Step 3: Cross multiply
   8,315x = 20,108 × 20,108
4. Step 4: Simplify right side
   8,315x = 404,331,664
5. Step 5: Solve for x
   x = 404,331,664/8,315
6. Step 6: Final answer
   x = 48,626.78