Finding the Third Proportional to 5,404.50 and 8,145.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.50 : 8,145.75 = 8,145.75 : x
2. Step 2: Convert to fraction form
   5,404.50/8,145.75 = 8,145.75/x
3. Step 3: Cross multiply
   5,404.50x = 8,145.75 × 8,145.75
4. Step 4: Simplify right side
   5,404.50x = 66,353,243.06
5. Step 5: Solve for x
   x = 66,353,243.06/5,404.50
6. Step 6: Final answer
   x = 12,277.41