Finding the Third Proportional to 8,365.78 and 18,280.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,365.78 : 18,280.69 = 18,280.69 : x
2. Step 2: Convert to fraction form
   8,365.78/18,280.69 = 18,280.69/x
3. Step 3: Cross multiply
   8,365.78x = 18,280.69 × 18,280.69
4. Step 4: Simplify right side
   8,365.78x = 334,183,535.47
5. Step 5: Solve for x
   x = 334,183,535.47/8,365.78
6. Step 6: Final answer
   x = 39,946.48