Finding the Third Proportional to 878,666 and 1,809,804

Step by Step Solution

1. Step 1: Write the proportion equation
   878,666 : 1,809,804 = 1,809,804 : x
2. Step 2: Convert to fraction form
   878,666/1,809,804 = 1,809,804/x
3. Step 3: Cross multiply
   878,666x = 1,809,804 × 1,809,804
4. Step 4: Simplify right side
   878,666x = 3,275,390,518,416
5. Step 5: Solve for x
   x = 3,275,390,518,416/878,666
6. Step 6: Final answer
   x = 3,727,685.51