Finding the Third Proportional to 2,418,276 and 5,278,648

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418,276 : 5,278,648 = 5,278,648 : x
2. Step 2: Convert to fraction form
   2,418,276/5,278,648 = 5,278,648/x
3. Step 3: Cross multiply
   2,418,276x = 5,278,648 × 5,278,648
4. Step 4: Simplify right side
   2,418,276x = 27,864,124,707,904
5. Step 5: Solve for x
   x = 27,864,124,707,904/2,418,276
6. Step 6: Final answer
   x = 11,522,309.57