Finding the Third Proportional to 10,666.69 and 15,615.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,666.69 : 15,615.28 = 15,615.28 : x
2. Step 2: Convert to fraction form
   10,666.69/15,615.28 = 15,615.28/x
3. Step 3: Cross multiply
   10,666.69x = 15,615.28 × 15,615.28
4. Step 4: Simplify right side
   10,666.69x = 243,837,008.52
5. Step 5: Solve for x
   x = 243,837,008.52/10,666.69
6. Step 6: Final answer
   x = 22,859.67