Finding the Third Proportional to 2,310.19 and 5,458.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.19 : 5,458.22 = 5,458.22 : x
2. Step 2: Convert to fraction form
   2,310.19/5,458.22 = 5,458.22/x
3. Step 3: Cross multiply
   2,310.19x = 5,458.22 × 5,458.22
4. Step 4: Simplify right side
   2,310.19x = 29,792,151.92
5. Step 5: Solve for x
   x = 29,792,151.92/2,310.19
6. Step 6: Final answer
   x = 12,895.99