Finding the Third Proportional to 831,612 and 1,287,162

Step by Step Solution

1. Step 1: Write the proportion equation
   831,612 : 1,287,162 = 1,287,162 : x
2. Step 2: Convert to fraction form
   831,612/1,287,162 = 1,287,162/x
3. Step 3: Cross multiply
   831,612x = 1,287,162 × 1,287,162
4. Step 4: Simplify right side
   831,612x = 1,656,786,014,244
5. Step 5: Solve for x
   x = 1,656,786,014,244/831,612
6. Step 6: Final answer
   x = 1,992,258.43