Finding the Third Proportional to 12,720 and 17,004

Step by Step Solution

1. Step 1: Write the proportion equation
   12,720 : 17,004 = 17,004 : x
2. Step 2: Convert to fraction form
   12,720/17,004 = 17,004/x
3. Step 3: Cross multiply
   12,720x = 17,004 × 17,004
4. Step 4: Simplify right side
   12,720x = 289,136,016
5. Step 5: Solve for x
   x = 289,136,016/12,720
6. Step 6: Final answer
   x = 22,730.82