Finding the Third Proportional to 18,570.50 and 27,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,570.50 : 27,144.50 = 27,144.50 : x
2. Step 2: Convert to fraction form
   18,570.50/27,144.50 = 27,144.50/x
3. Step 3: Cross multiply
   18,570.50x = 27,144.50 × 27,144.50
4. Step 4: Simplify right side
   18,570.50x = 736,823,880.25
5. Step 5: Solve for x
   x = 736,823,880.25/18,570.50
6. Step 6: Final answer
   x = 39,677.12