Finding the Third Proportional to 11,986 and 25,790

Step by Step Solution

1. Step 1: Write the proportion equation
   11,986 : 25,790 = 25,790 : x
2. Step 2: Convert to fraction form
   11,986/25,790 = 25,790/x
3. Step 3: Cross multiply
   11,986x = 25,790 × 25,790
4. Step 4: Simplify right side
   11,986x = 665,124,100
5. Step 5: Solve for x
   x = 665,124,100/11,986
6. Step 6: Final answer
   x = 55,491.75