Finding the Third Proportional to 3,111.75 and 7,392.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.75 : 7,392.38 = 7,392.38 : x
2. Step 2: Convert to fraction form
   3,111.75/7,392.38 = 7,392.38/x
3. Step 3: Cross multiply
   3,111.75x = 7,392.38 × 7,392.38
4. Step 4: Simplify right side
   3,111.75x = 54,647,208.14
5. Step 5: Solve for x
   x = 54,647,208.14/3,111.75
6. Step 6: Final answer
   x = 17,561.57