Finding the Third Proportional to 11,243.81 and 18,280.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,243.81 : 18,280.69 = 18,280.69 : x
2. Step 2: Convert to fraction form
   11,243.81/18,280.69 = 18,280.69/x
3. Step 3: Cross multiply
   11,243.81x = 18,280.69 × 18,280.69
4. Step 4: Simplify right side
   11,243.81x = 334,183,535.47
5. Step 5: Solve for x
   x = 334,183,535.47/11,243.81
6. Step 6: Final answer
   x = 29,721.55