Finding the Third Proportional to 18,131.34 and 27,718.03

Step by Step Solution

1. Step 1: Write the proportion equation
   18,131.34 : 27,718.03 = 27,718.03 : x
2. Step 2: Convert to fraction form
   18,131.34/27,718.03 = 27,718.03/x
3. Step 3: Cross multiply
   18,131.34x = 27,718.03 × 27,718.03
4. Step 4: Simplify right side
   18,131.34x = 768,289,256.38
5. Step 5: Solve for x
   x = 768,289,256.38/18,131.34
6. Step 6: Final answer
   x = 42,373.54