Finding the Third Proportional to 3,455.75 and 5,359.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,455.75 : 5,359.69 = 5,359.69 : x
2. Step 2: Convert to fraction form
   3,455.75/5,359.69 = 5,359.69/x
3. Step 3: Cross multiply
   3,455.75x = 5,359.69 × 5,359.69
4. Step 4: Simplify right side
   3,455.75x = 28,726,250.10
5. Step 5: Solve for x
   x = 28,726,250.10/3,455.75
6. Step 6: Final answer
   x = 8,312.59