Finding the Third Proportional to 8,690 and 13,076

Step by Step Solution

1. Step 1: Write the proportion equation
   8,690 : 13,076 = 13,076 : x
2. Step 2: Convert to fraction form
   8,690/13,076 = 13,076/x
3. Step 3: Cross multiply
   8,690x = 13,076 × 13,076
4. Step 4: Simplify right side
   8,690x = 170,981,776
5. Step 5: Solve for x
   x = 170,981,776/8,690
6. Step 6: Final answer
   x = 19,675.69