Finding the Third Proportional to 4,882.78 and 7,558.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,882.78 : 7,558.31 = 7,558.31 : x
2. Step 2: Convert to fraction form
   4,882.78/7,558.31 = 7,558.31/x
3. Step 3: Cross multiply
   4,882.78x = 7,558.31 × 7,558.31
4. Step 4: Simplify right side
   4,882.78x = 57,128,087.85
5. Step 5: Solve for x
   x = 57,128,087.85/4,882.78
6. Step 6: Final answer
   x = 11,699.91