Finding the Third Proportional to 18,604.69 and 25,780.78

Step by Step Solution

1. Step 1: Write the proportion equation
   18,604.69 : 25,780.78 = 25,780.78 : x
2. Step 2: Convert to fraction form
   18,604.69/25,780.78 = 25,780.78/x
3. Step 3: Cross multiply
   18,604.69x = 25,780.78 × 25,780.78
4. Step 4: Simplify right side
   18,604.69x = 664,648,681.86
5. Step 5: Solve for x
   x = 664,648,681.86/18,604.69
6. Step 6: Final answer
   x = 35,724.80