Finding the Third Proportional to 10,666.69 and 16,515.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,666.69 : 16,515.56 = 16,515.56 : x
2. Step 2: Convert to fraction form
   10,666.69/16,515.56 = 16,515.56/x
3. Step 3: Cross multiply
   10,666.69x = 16,515.56 × 16,515.56
4. Step 4: Simplify right side
   10,666.69x = 272,763,804.69
5. Step 5: Solve for x
   x = 272,763,804.69/10,666.69
6. Step 6: Final answer
   x = 25,571.56