Finding the Third Proportional to 2,020.78 and 3,018.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.78 : 3,018.76 = 3,018.76 : x
2. Step 2: Convert to fraction form
   2,020.78/3,018.76 = 3,018.76/x
3. Step 3: Cross multiply
   2,020.78x = 3,018.76 × 3,018.76
4. Step 4: Simplify right side
   2,020.78x = 9,112,922.31
5. Step 5: Solve for x
   x = 9,112,922.31/2,020.78
6. Step 6: Final answer
   x = 4,509.60