Finding the Third Proportional to 16,687.69 and 25,830.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,687.69 : 25,830.56 = 25,830.56 : x
2. Step 2: Convert to fraction form
   16,687.69/25,830.56 = 25,830.56/x
3. Step 3: Cross multiply
   16,687.69x = 25,830.56 × 25,830.56
4. Step 4: Simplify right side
   16,687.69x = 667,217,959.07
5. Step 5: Solve for x
   x = 667,217,959.07/16,687.69
6. Step 6: Final answer
   x = 39,982.65