Finding the Third Proportional to 8,290 and 16,040

Step by Step Solution

1. Step 1: Write the proportion equation
   8,290 : 16,040 = 16,040 : x
2. Step 2: Convert to fraction form
   8,290/16,040 = 16,040/x
3. Step 3: Cross multiply
   8,290x = 16,040 × 16,040
4. Step 4: Simplify right side
   8,290x = 257,281,600
5. Step 5: Solve for x
   x = 257,281,600/8,290
6. Step 6: Final answer
   x = 31,035.17