Finding the Third Proportional to 878,019 and 1,780,260

Step by Step Solution

1. Step 1: Write the proportion equation
   878,019 : 1,780,260 = 1,780,260 : x
2. Step 2: Convert to fraction form
   878,019/1,780,260 = 1,780,260/x
3. Step 3: Cross multiply
   878,019x = 1,780,260 × 1,780,260
4. Step 4: Simplify right side
   878,019x = 3,169,325,667,600
5. Step 5: Solve for x
   x = 3,169,325,667,600/878,019
6. Step 6: Final answer
   x = 3,609,632.21