Finding the Third Proportional to 3,646.69 and 7,480.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,646.69 : 7,480.69 = 7,480.69 : x
2. Step 2: Convert to fraction form
   3,646.69/7,480.69 = 7,480.69/x
3. Step 3: Cross multiply
   3,646.69x = 7,480.69 × 7,480.69
4. Step 4: Simplify right side
   3,646.69x = 55,960,685.47
5. Step 5: Solve for x
   x = 55,960,685.47/3,646.69
6. Step 6: Final answer
   x = 15,345.62