Finding the Third Proportional to 2,578,378 and 5,464,116

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,378 : 5,464,116 = 5,464,116 : x
2. Step 2: Convert to fraction form
   2,578,378/5,464,116 = 5,464,116/x
3. Step 3: Cross multiply
   2,578,378x = 5,464,116 × 5,464,116
4. Step 4: Simplify right side
   2,578,378x = 29,856,563,661,456
5. Step 5: Solve for x
   x = 29,856,563,661,456/2,578,378
6. Step 6: Final answer
   x = 11,579,591.38