Finding the Third Proportional to 18,403.88 and 39,745.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,403.88 : 39,745.69 = 39,745.69 : x
2. Step 2: Convert to fraction form
   18,403.88/39,745.69 = 39,745.69/x
3. Step 3: Cross multiply
   18,403.88x = 39,745.69 × 39,745.69
4. Step 4: Simplify right side
   18,403.88x = 1,579,719,674.85
5. Step 5: Solve for x
   x = 1,579,719,674.85/18,403.88
6. Step 6: Final answer
   x = 85,836.25