Finding the Third Proportional to 2,557,440 and 3,818,648

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557,440 : 3,818,648 = 3,818,648 : x
2. Step 2: Convert to fraction form
   2,557,440/3,818,648 = 3,818,648/x
3. Step 3: Cross multiply
   2,557,440x = 3,818,648 × 3,818,648
4. Step 4: Simplify right side
   2,557,440x = 14,582,072,547,904
5. Step 5: Solve for x
   x = 14,582,072,547,904/2,557,440
6. Step 6: Final answer
   x = 5,701,823.91