Finding the Third Proportional to 18,118.69 and 39,727.13

Step by Step Solution

1. Step 1: Write the proportion equation
   18,118.69 : 39,727.13 = 39,727.13 : x
2. Step 2: Convert to fraction form
   18,118.69/39,727.13 = 39,727.13/x
3. Step 3: Cross multiply
   18,118.69x = 39,727.13 × 39,727.13
4. Step 4: Simplify right side
   18,118.69x = 1,578,244,460.77
5. Step 5: Solve for x
   x = 1,578,244,460.77/18,118.69
6. Step 6: Final answer
   x = 87,105.89