Finding the Third Proportional to 18,243.56 and 27,738.56

Step by Step Solution

1. Step 1: Write the proportion equation
   18,243.56 : 27,738.56 = 27,738.56 : x
2. Step 2: Convert to fraction form
   18,243.56/27,738.56 = 27,738.56/x
3. Step 3: Cross multiply
   18,243.56x = 27,738.56 × 27,738.56
4. Step 4: Simplify right side
   18,243.56x = 769,427,849.57
5. Step 5: Solve for x
   x = 769,427,849.57/18,243.56
6. Step 6: Final answer
   x = 42,175.31