Finding the Third Proportional to 1,200,489 and 1,831,227

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,489 : 1,831,227 = 1,831,227 : x
2. Step 2: Convert to fraction form
   1,200,489/1,831,227 = 1,831,227/x
3. Step 3: Cross multiply
   1,200,489x = 1,831,227 × 1,831,227
4. Step 4: Simplify right side
   1,200,489x = 3,353,392,325,529
5. Step 5: Solve for x
   x = 3,353,392,325,529/1,200,489
6. Step 6: Final answer
   x = 2,793,355.31