Finding the Third Proportional to 5,131.69 and 5,455.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.69 : 5,455.69 = 5,455.69 : x
2. Step 2: Convert to fraction form
   5,131.69/5,455.69 = 5,455.69/x
3. Step 3: Cross multiply
   5,131.69x = 5,455.69 × 5,455.69
4. Step 4: Simplify right side
   5,131.69x = 29,764,526.10
5. Step 5: Solve for x
   x = 29,764,526.10/5,131.69
6. Step 6: Final answer
   x = 5,800.14