Finding the Third Proportional to 831,817 and 1,188,636

Step by Step Solution

1. Step 1: Write the proportion equation
   831,817 : 1,188,636 = 1,188,636 : x
2. Step 2: Convert to fraction form
   831,817/1,188,636 = 1,188,636/x
3. Step 3: Cross multiply
   831,817x = 1,188,636 × 1,188,636
4. Step 4: Simplify right side
   831,817x = 1,412,855,540,496
5. Step 5: Solve for x
   x = 1,412,855,540,496/831,817
6. Step 6: Final answer
   x = 1,698,517.27