Finding the Third Proportional to 831,589 and 1,787,406

Step by Step Solution

1. Step 1: Write the proportion equation
   831,589 : 1,787,406 = 1,787,406 : x
2. Step 2: Convert to fraction form
   831,589/1,787,406 = 1,787,406/x
3. Step 3: Cross multiply
   831,589x = 1,787,406 × 1,787,406
4. Step 4: Simplify right side
   831,589x = 3,194,820,208,836
5. Step 5: Solve for x
   x = 3,194,820,208,836/831,589
6. Step 6: Final answer
   x = 3,841,825.96