Finding the Third Proportional to 3,375.42 and 3,891.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,375.42 : 3,891.80 = 3,891.80 : x
2. Step 2: Convert to fraction form
   3,375.42/3,891.80 = 3,891.80/x
3. Step 3: Cross multiply
   3,375.42x = 3,891.80 × 3,891.80
4. Step 4: Simplify right side
   3,375.42x = 15,146,082.92
5. Step 5: Solve for x
   x = 15,146,082.92/3,375.42
6. Step 6: Final answer
   x = 4,487.17