Finding the Third Proportional to 2,648.25 and 5,429.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.25 : 5,429.25 = 5,429.25 : x
2. Step 2: Convert to fraction form
   2,648.25/5,429.25 = 5,429.25/x
3. Step 3: Cross multiply
   2,648.25x = 5,429.25 × 5,429.25
4. Step 4: Simplify right side
   2,648.25x = 29,476,755.56
5. Step 5: Solve for x
   x = 29,476,755.56/2,648.25
6. Step 6: Final answer
   x = 11,130.65