Finding the Third Proportional to 18,859.50 and 39,268.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,859.50 : 39,268.69 = 39,268.69 : x
2. Step 2: Convert to fraction form
   18,859.50/39,268.69 = 39,268.69/x
3. Step 3: Cross multiply
   18,859.50x = 39,268.69 × 39,268.69
4. Step 4: Simplify right side
   18,859.50x = 1,542,029,817.97
5. Step 5: Solve for x
   x = 1,542,029,817.97/18,859.50
6. Step 6: Final answer
   x = 81,764.09