Finding the Third Proportional to 878,661 and 1,809,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   878,661 : 1,809,796.50 = 1,809,796.50 : x
2. Step 2: Convert to fraction form
   878,661/1,809,796.50 = 1,809,796.50/x
3. Step 3: Cross multiply
   878,661x = 1,809,796.50 × 1,809,796.50
4. Step 4: Simplify right side
   878,661x = 3,275,363,371,412.25
5. Step 5: Solve for x
   x = 3,275,363,371,412.25/878,661
6. Step 6: Final answer
   x = 3,727,675.83