Finding the Third Proportional to 12,820 and 17,110

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820 : 17,110 = 17,110 : x
2. Step 2: Convert to fraction form
   12,820/17,110 = 17,110/x
3. Step 3: Cross multiply
   12,820x = 17,110 × 17,110
4. Step 4: Simplify right side
   12,820x = 292,752,100
5. Step 5: Solve for x
   x = 292,752,100/12,820
6. Step 6: Final answer
   x = 22,835.58