Finding the Third Proportional to 3,831,408 and 5,578,632

Step by Step Solution

1. Step 1: Write the proportion equation
   3,831,408 : 5,578,632 = 5,578,632 : x
2. Step 2: Convert to fraction form
   3,831,408/5,578,632 = 5,578,632/x
3. Step 3: Cross multiply
   3,831,408x = 5,578,632 × 5,578,632
4. Step 4: Simplify right side
   3,831,408x = 31,121,134,991,424
5. Step 5: Solve for x
   x = 31,121,134,991,424/3,831,408
6. Step 6: Final answer
   x = 8,122,636.64