Finding the Third Proportional to 3,561.47 and 7,517.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.47 : 7,517.81 = 7,517.81 : x
2. Step 2: Convert to fraction form
   3,561.47/7,517.81 = 7,517.81/x
3. Step 3: Cross multiply
   3,561.47x = 7,517.81 × 7,517.81
4. Step 4: Simplify right side
   3,561.47x = 56,517,504.79
5. Step 5: Solve for x
   x = 56,517,504.79/3,561.47
6. Step 6: Final answer
   x = 15,869.16