Finding the Third Proportional to 1,215,368 and 2,638,096

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,368 : 2,638,096 = 2,638,096 : x
2. Step 2: Convert to fraction form
   1,215,368/2,638,096 = 2,638,096/x
3. Step 3: Cross multiply
   1,215,368x = 2,638,096 × 2,638,096
4. Step 4: Simplify right side
   1,215,368x = 6,959,550,505,216
5. Step 5: Solve for x
   x = 6,959,550,505,216/1,215,368
6. Step 6: Final answer
   x = 5,726,290.72