Finding the Third Proportional to 831,087 and 1,819,815

Step by Step Solution

1. Step 1: Write the proportion equation
   831,087 : 1,819,815 = 1,819,815 : x
2. Step 2: Convert to fraction form
   831,087/1,819,815 = 1,819,815/x
3. Step 3: Cross multiply
   831,087x = 1,819,815 × 1,819,815
4. Step 4: Simplify right side
   831,087x = 3,311,726,634,225
5. Step 5: Solve for x
   x = 3,311,726,634,225/831,087
6. Step 6: Final answer
   x = 3,984,813.42