Finding the Third Proportional to 2,431.69 and 5,317.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.69 : 5,317.31 = 5,317.31 : x
2. Step 2: Convert to fraction form
   2,431.69/5,317.31 = 5,317.31/x
3. Step 3: Cross multiply
   2,431.69x = 5,317.31 × 5,317.31
4. Step 4: Simplify right side
   2,431.69x = 28,273,812.22
5. Step 5: Solve for x
   x = 28,273,812.22/2,431.69
6. Step 6: Final answer
   x = 11,627.24