Finding the Third Proportional to 2,418.89 and 5,299.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418.89 : 5,299.17 = 5,299.17 : x
2. Step 2: Convert to fraction form
   2,418.89/5,299.17 = 5,299.17/x
3. Step 3: Cross multiply
   2,418.89x = 5,299.17 × 5,299.17
4. Step 4: Simplify right side
   2,418.89x = 28,081,222.56
5. Step 5: Solve for x
   x = 28,081,222.56/2,418.89
6. Step 6: Final answer
   x = 11,609.13