Finding the Third Proportional to 1,200,960 and 2,638,116

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,960 : 2,638,116 = 2,638,116 : x
2. Step 2: Convert to fraction form
   1,200,960/2,638,116 = 2,638,116/x
3. Step 3: Cross multiply
   1,200,960x = 2,638,116 × 2,638,116
4. Step 4: Simplify right side
   1,200,960x = 6,959,656,029,456
5. Step 5: Solve for x
   x = 6,959,656,029,456/1,200,960
6. Step 6: Final answer
   x = 5,795,077.30