Finding the Third Proportional to 831,072 and 1,807,872

Step by Step Solution

1. Step 1: Write the proportion equation
   831,072 : 1,807,872 = 1,807,872 : x
2. Step 2: Convert to fraction form
   831,072/1,807,872 = 1,807,872/x
3. Step 3: Cross multiply
   831,072x = 1,807,872 × 1,807,872
4. Step 4: Simplify right side
   831,072x = 3,268,401,168,384
5. Step 5: Solve for x
   x = 3,268,401,168,384/831,072
6. Step 6: Final answer
   x = 3,932,753.32