Finding the Third Proportional to 2,818.13 and 5,560.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.13 : 5,560.31 = 5,560.31 : x
2. Step 2: Convert to fraction form
   2,818.13/5,560.31 = 5,560.31/x
3. Step 3: Cross multiply
   2,818.13x = 5,560.31 × 5,560.31
4. Step 4: Simplify right side
   2,818.13x = 30,917,075.10
5. Step 5: Solve for x
   x = 30,917,075.10/2,818.13
6. Step 6: Final answer
   x = 10,970.80