Finding the Third Proportional to 3,414,128 and 5,286,078

Step by Step Solution

1. Step 1: Write the proportion equation
   3,414,128 : 5,286,078 = 5,286,078 : x
2. Step 2: Convert to fraction form
   3,414,128/5,286,078 = 5,286,078/x
3. Step 3: Cross multiply
   3,414,128x = 5,286,078 × 5,286,078
4. Step 4: Simplify right side
   3,414,128x = 27,942,620,622,084
5. Step 5: Solve for x
   x = 27,942,620,622,084/3,414,128
6. Step 6: Final answer
   x = 8,184,409.20