Finding the Third Proportional to 16,689.25 and 25,991.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,689.25 : 25,991.25 = 25,991.25 : x
2. Step 2: Convert to fraction form
   16,689.25/25,991.25 = 25,991.25/x
3. Step 3: Cross multiply
   16,689.25x = 25,991.25 × 25,991.25
4. Step 4: Simplify right side
   16,689.25x = 675,545,076.56
5. Step 5: Solve for x
   x = 675,545,076.56/16,689.25
6. Step 6: Final answer
   x = 40,477.86