Finding the Third Proportional to 2,662.88 and 5,619.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.88 : 5,619.38 = 5,619.38 : x
2. Step 2: Convert to fraction form
   2,662.88/5,619.38 = 5,619.38/x
3. Step 3: Cross multiply
   2,662.88x = 5,619.38 × 5,619.38
4. Step 4: Simplify right side
   2,662.88x = 31,577,375.39
5. Step 5: Solve for x
   x = 31,577,375.39/2,662.88
6. Step 6: Final answer
   x = 11,858.38