Finding the Third Proportional to 9,290 and 12,995

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290 : 12,995 = 12,995 : x
2. Step 2: Convert to fraction form
   9,290/12,995 = 12,995/x
3. Step 3: Cross multiply
   9,290x = 12,995 × 12,995
4. Step 4: Simplify right side
   9,290x = 168,870,025
5. Step 5: Solve for x
   x = 168,870,025/9,290
6. Step 6: Final answer
   x = 18,177.61