Finding the Third Proportional to 15,878.53 and 34,399.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,878.53 : 34,399.69 = 34,399.69 : x
2. Step 2: Convert to fraction form
   15,878.53/34,399.69 = 34,399.69/x
3. Step 3: Cross multiply
   15,878.53x = 34,399.69 × 34,399.69
4. Step 4: Simplify right side
   15,878.53x = 1,183,338,500.10
5. Step 5: Solve for x
   x = 1,183,338,500.10/15,878.53
6. Step 6: Final answer
   x = 74,524.43