Finding the Third Proportional to 831,105 and 1,289,427

Step by Step Solution

1. Step 1: Write the proportion equation
   831,105 : 1,289,427 = 1,289,427 : x
2. Step 2: Convert to fraction form
   831,105/1,289,427 = 1,289,427/x
3. Step 3: Cross multiply
   831,105x = 1,289,427 × 1,289,427
4. Step 4: Simplify right side
   831,105x = 1,662,621,988,329
5. Step 5: Solve for x
   x = 1,662,621,988,329/831,105
6. Step 6: Final answer
   x = 2,000,495.71