Finding the Third Proportional to 3,720.09 and 7,713.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,720.09 : 7,713.56 = 7,713.56 : x
2. Step 2: Convert to fraction form
   3,720.09/7,713.56 = 7,713.56/x
3. Step 3: Cross multiply
   3,720.09x = 7,713.56 × 7,713.56
4. Step 4: Simplify right side
   3,720.09x = 59,499,046.44
5. Step 5: Solve for x
   x = 59,499,046.44/3,720.09
6. Step 6: Final answer
   x = 15,993.96