Finding the Third Proportional to 17,986 and 39,404

Step by Step Solution

1. Step 1: Write the proportion equation
   17,986 : 39,404 = 39,404 : x
2. Step 2: Convert to fraction form
   17,986/39,404 = 39,404/x
3. Step 3: Cross multiply
   17,986x = 39,404 × 39,404
4. Step 4: Simplify right side
   17,986x = 1,552,675,216
5. Step 5: Solve for x
   x = 1,552,675,216/17,986
6. Step 6: Final answer
   x = 86,326.88