Finding the Third Proportional to 2,572.91 and 5,535.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.91 : 5,535.91 = 5,535.91 : x
2. Step 2: Convert to fraction form
   2,572.91/5,535.91 = 5,535.91/x
3. Step 3: Cross multiply
   2,572.91x = 5,535.91 × 5,535.91
4. Step 4: Simplify right side
   2,572.91x = 30,646,344.51
5. Step 5: Solve for x
   x = 30,646,344.51/2,572.91
6. Step 6: Final answer
   x = 11,911.16