Finding the Third Proportional to 18,509.34 and 27,072.56

Step by Step Solution

1. Step 1: Write the proportion equation
   18,509.34 : 27,072.56 = 27,072.56 : x
2. Step 2: Convert to fraction form
   18,509.34/27,072.56 = 27,072.56/x
3. Step 3: Cross multiply
   18,509.34x = 27,072.56 × 27,072.56
4. Step 4: Simplify right side
   18,509.34x = 732,923,640.32
5. Step 5: Solve for x
   x = 732,923,640.32/18,509.34
6. Step 6: Final answer
   x = 39,597.49