Finding the Third Proportional to 15,643.69 and 34,404.19

Step by Step Solution

1. Step 1: Write the proportion equation
   15,643.69 : 34,404.19 = 34,404.19 : x
2. Step 2: Convert to fraction form
   15,643.69/34,404.19 = 34,404.19/x
3. Step 3: Cross multiply
   15,643.69x = 34,404.19 × 34,404.19
4. Step 4: Simplify right side
   15,643.69x = 1,183,648,117.54
5. Step 5: Solve for x
   x = 1,183,648,117.54/15,643.69
6. Step 6: Final answer
   x = 75,662.99