Finding the Third Proportional to 3,431.53 and 7,392.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,431.53 : 7,392.09 = 7,392.09 : x
2. Step 2: Convert to fraction form
   3,431.53/7,392.09 = 7,392.09/x
3. Step 3: Cross multiply
   3,431.53x = 7,392.09 × 7,392.09
4. Step 4: Simplify right side
   3,431.53x = 54,643,050.01
5. Step 5: Solve for x
   x = 54,643,050.01/3,431.53
6. Step 6: Final answer
   x = 15,923.81