Finding the Third Proportional to 1,904,408 and 3,966,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904,408 : 3,966,640 = 3,966,640 : x
2. Step 2: Convert to fraction form
   1,904,408/3,966,640 = 3,966,640/x
3. Step 3: Cross multiply
   1,904,408x = 3,966,640 × 3,966,640
4. Step 4: Simplify right side
   1,904,408x = 15,734,232,889,600
5. Step 5: Solve for x
   x = 15,734,232,889,600/1,904,408
6. Step 6: Final answer
   x = 8,262,007.35