Finding the Third Proportional to 3,361.50 and 8,469.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,361.50 : 8,469.56 = 8,469.56 : x
2. Step 2: Convert to fraction form
   3,361.50/8,469.56 = 8,469.56/x
3. Step 3: Cross multiply
   3,361.50x = 8,469.56 × 8,469.56
4. Step 4: Simplify right side
   3,361.50x = 71,733,488.94
5. Step 5: Solve for x
   x = 71,733,488.94/3,361.50
6. Step 6: Final answer
   x = 21,339.73