Finding the Third Proportional to 8,128 and 12,020

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128 : 12,020 = 12,020 : x
2. Step 2: Convert to fraction form
   8,128/12,020 = 12,020/x
3. Step 3: Cross multiply
   8,128x = 12,020 × 12,020
4. Step 4: Simplify right side
   8,128x = 144,480,400
5. Step 5: Solve for x
   x = 144,480,400/8,128
6. Step 6: Final answer
   x = 17,775.64