Finding the Third Proportional to 3,579.88 and 7,405.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,579.88 : 7,405.38 = 7,405.38 : x
2. Step 2: Convert to fraction form
   3,579.88/7,405.38 = 7,405.38/x
3. Step 3: Cross multiply
   3,579.88x = 7,405.38 × 7,405.38
4. Step 4: Simplify right side
   3,579.88x = 54,839,578.89
5. Step 5: Solve for x
   x = 54,839,578.89/3,579.88
6. Step 6: Final answer
   x = 15,318.85