Finding the Third Proportional to 2,872.50 and 5,805

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.50 : 5,805 = 5,805 : x
2. Step 2: Convert to fraction form
   2,872.50/5,805 = 5,805/x
3. Step 3: Cross multiply
   2,872.50x = 5,805 × 5,805
4. Step 4: Simplify right side
   2,872.50x = 33,698,025
5. Step 5: Solve for x
   x = 33,698,025/2,872.50
6. Step 6: Final answer
   x = 11,731.25