Finding the Third Proportional to 839,412 and 1,812,843

Step by Step Solution

1. Step 1: Write the proportion equation
   839,412 : 1,812,843 = 1,812,843 : x
2. Step 2: Convert to fraction form
   839,412/1,812,843 = 1,812,843/x
3. Step 3: Cross multiply
   839,412x = 1,812,843 × 1,812,843
4. Step 4: Simplify right side
   839,412x = 3,286,399,742,649
5. Step 5: Solve for x
   x = 3,286,399,742,649/839,412
6. Step 6: Final answer
   x = 3,915,121.23