Finding the Third Proportional to 12,804 and 17,290

Step by Step Solution

1. Step 1: Write the proportion equation
   12,804 : 17,290 = 17,290 : x
2. Step 2: Convert to fraction form
   12,804/17,290 = 17,290/x
3. Step 3: Cross multiply
   12,804x = 17,290 × 17,290
4. Step 4: Simplify right side
   12,804x = 298,944,100
5. Step 5: Solve for x
   x = 298,944,100/12,804
6. Step 6: Final answer
   x = 23,347.71