Finding the Third Proportional to 18,214.88 and 39,917.81

Step by Step Solution

1. Step 1: Write the proportion equation
   18,214.88 : 39,917.81 = 39,917.81 : x
2. Step 2: Convert to fraction form
   18,214.88/39,917.81 = 39,917.81/x
3. Step 3: Cross multiply
   18,214.88x = 39,917.81 × 39,917.81
4. Step 4: Simplify right side
   18,214.88x = 1,593,431,754.79
5. Step 5: Solve for x
   x = 1,593,431,754.79/18,214.88
6. Step 6: Final answer
   x = 87,479.70