Finding the Third Proportional to 839,572 and 1,811,820

Step by Step Solution

1. Step 1: Write the proportion equation
   839,572 : 1,811,820 = 1,811,820 : x
2. Step 2: Convert to fraction form
   839,572/1,811,820 = 1,811,820/x
3. Step 3: Cross multiply
   839,572x = 1,811,820 × 1,811,820
4. Step 4: Simplify right side
   839,572x = 3,282,691,712,400
5. Step 5: Solve for x
   x = 3,282,691,712,400/839,572
6. Step 6: Final answer
   x = 3,909,958.54