Finding the Third Proportional to 18,139.50 and 27,315.56

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139.50 : 27,315.56 = 27,315.56 : x
2. Step 2: Convert to fraction form
   18,139.50/27,315.56 = 27,315.56/x
3. Step 3: Cross multiply
   18,139.50x = 27,315.56 × 27,315.56
4. Step 4: Simplify right side
   18,139.50x = 746,139,954.69
5. Step 5: Solve for x
   x = 746,139,954.69/18,139.50
6. Step 6: Final answer
   x = 41,133.44