Finding the Third Proportional to 3,330.78 and 7,123.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,330.78 : 7,123.16 = 7,123.16 : x
2. Step 2: Convert to fraction form
   3,330.78/7,123.16 = 7,123.16/x
3. Step 3: Cross multiply
   3,330.78x = 7,123.16 × 7,123.16
4. Step 4: Simplify right side
   3,330.78x = 50,739,354.96
5. Step 5: Solve for x
   x = 50,739,354.96/3,330.78
6. Step 6: Final answer
   x = 15,233.47