Finding the Third Proportional to 18,278.81 and 39,277.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,278.81 : 39,277.88 = 39,277.88 : x
2. Step 2: Convert to fraction form
   18,278.81/39,277.88 = 39,277.88/x
3. Step 3: Cross multiply
   18,278.81x = 39,277.88 × 39,277.88
4. Step 4: Simplify right side
   18,278.81x = 1,542,751,464.52
5. Step 5: Solve for x
   x = 1,542,751,464.52/18,278.81
6. Step 6: Final answer
   x = 84,401.08