Finding the Third Proportional to 2,140,978 and 3,131,078

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,978 : 3,131,078 = 3,131,078 : x
2. Step 2: Convert to fraction form
   2,140,978/3,131,078 = 3,131,078/x
3. Step 3: Cross multiply
   2,140,978x = 3,131,078 × 3,131,078
4. Step 4: Simplify right side
   2,140,978x = 9,803,649,442,084
5. Step 5: Solve for x
   x = 9,803,649,442,084/2,140,978
6. Step 6: Final answer
   x = 4,579,051.93