Finding the Third Proportional to 2,563.31 and 5,388.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,563.31 : 5,388.19 = 5,388.19 : x
2. Step 2: Convert to fraction form
   2,563.31/5,388.19 = 5,388.19/x
3. Step 3: Cross multiply
   2,563.31x = 5,388.19 × 5,388.19
4. Step 4: Simplify right side
   2,563.31x = 29,032,564.54
5. Step 5: Solve for x
   x = 29,032,564.54/2,563.31
6. Step 6: Final answer
   x = 11,326.19