Finding the Third Proportional to 15,121.69 and 19,604.53

Step by Step Solution

1. Step 1: Write the proportion equation
   15,121.69 : 19,604.53 = 19,604.53 : x
2. Step 2: Convert to fraction form
   15,121.69/19,604.53 = 19,604.53/x
3. Step 3: Cross multiply
   15,121.69x = 19,604.53 × 19,604.53
4. Step 4: Simplify right side
   15,121.69x = 384,337,645.53
5. Step 5: Solve for x
   x = 384,337,645.53/15,121.69
6. Step 6: Final answer
   x = 25,416.32