Finding the Third Proportional to 831,172 and 1,817,864

Step by Step Solution

1. Step 1: Write the proportion equation
   831,172 : 1,817,864 = 1,817,864 : x
2. Step 2: Convert to fraction form
   831,172/1,817,864 = 1,817,864/x
3. Step 3: Cross multiply
   831,172x = 1,817,864 × 1,817,864
4. Step 4: Simplify right side
   831,172x = 3,304,629,522,496
5. Step 5: Solve for x
   x = 3,304,629,522,496/831,172
6. Step 6: Final answer
   x = 3,975,867.24