Finding the Third Proportional to 18,144.61 and 39,208.55

Step by Step Solution

1. Step 1: Write the proportion equation
   18,144.61 : 39,208.55 = 39,208.55 : x
2. Step 2: Convert to fraction form
   18,144.61/39,208.55 = 39,208.55/x
3. Step 3: Cross multiply
   18,144.61x = 39,208.55 × 39,208.55
4. Step 4: Simplify right side
   18,144.61x = 1,537,310,148.05
5. Step 5: Solve for x
   x = 1,537,310,148.05/18,144.61
6. Step 6: Final answer
   x = 84,725.45