Finding the Third Proportional to 18,218.25 and 27,705.38

Step by Step Solution

1. Step 1: Write the proportion equation
   18,218.25 : 27,705.38 = 27,705.38 : x
2. Step 2: Convert to fraction form
   18,218.25/27,705.38 = 27,705.38/x
3. Step 3: Cross multiply
   18,218.25x = 27,705.38 × 27,705.38
4. Step 4: Simplify right side
   18,218.25x = 767,587,803.89
5. Step 5: Solve for x
   x = 767,587,803.89/18,218.25
6. Step 6: Final answer
   x = 42,132.91