Finding the Third Proportional to 2,555.16 and 5,513.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.16 : 5,513.53 = 5,513.53 : x
2. Step 2: Convert to fraction form
   2,555.16/5,513.53 = 5,513.53/x
3. Step 3: Cross multiply
   2,555.16x = 5,513.53 × 5,513.53
4. Step 4: Simplify right side
   2,555.16x = 30,399,026.84
5. Step 5: Solve for x
   x = 30,399,026.84/2,555.16
6. Step 6: Final answer
   x = 11,897.13