Finding the Third Proportional to 878,717 and 1,917,814

Step by Step Solution

1. Step 1: Write the proportion equation
   878,717 : 1,917,814 = 1,917,814 : x
2. Step 2: Convert to fraction form
   878,717/1,917,814 = 1,917,814/x
3. Step 3: Cross multiply
   878,717x = 1,917,814 × 1,917,814
4. Step 4: Simplify right side
   878,717x = 3,678,010,538,596
5. Step 5: Solve for x
   x = 3,678,010,538,596/878,717
6. Step 6: Final answer
   x = 4,185,659.93