Finding the Third Proportional to 2,528.72 and 5,118.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.72 : 5,118.19 = 5,118.19 : x
2. Step 2: Convert to fraction form
   2,528.72/5,118.19 = 5,118.19/x
3. Step 3: Cross multiply
   2,528.72x = 5,118.19 × 5,118.19
4. Step 4: Simplify right side
   2,528.72x = 26,195,843.29
5. Step 5: Solve for x
   x = 26,195,843.29/2,528.72
6. Step 6: Final answer
   x = 10,359.33