Finding the Third Proportional to 1,665.28 and 3,615.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.28 : 3,615.47 = 3,615.47 : x
2. Step 2: Convert to fraction form
   1,665.28/3,615.47 = 3,615.47/x
3. Step 3: Cross multiply
   1,665.28x = 3,615.47 × 3,615.47
4. Step 4: Simplify right side
   1,665.28x = 13,071,614.28
5. Step 5: Solve for x
   x = 13,071,614.28/1,665.28
6. Step 6: Final answer
   x = 7,849.49