Finding the Third Proportional to 3,831,018 and 8,380,020

Step by Step Solution

1. Step 1: Write the proportion equation
   3,831,018 : 8,380,020 = 8,380,020 : x
2. Step 2: Convert to fraction form
   3,831,018/8,380,020 = 8,380,020/x
3. Step 3: Cross multiply
   3,831,018x = 8,380,020 × 8,380,020
4. Step 4: Simplify right side
   3,831,018x = 70,224,735,200,400
5. Step 5: Solve for x
   x = 70,224,735,200,400/3,831,018
6. Step 6: Final answer
   x = 18,330,567.80