Finding the Third Proportional to 878,401 and 1,917,434

Step by Step Solution

1. Step 1: Write the proportion equation
   878,401 : 1,917,434 = 1,917,434 : x
2. Step 2: Convert to fraction form
   878,401/1,917,434 = 1,917,434/x
3. Step 3: Cross multiply
   878,401x = 1,917,434 × 1,917,434
4. Step 4: Simplify right side
   878,401x = 3,676,553,144,356
5. Step 5: Solve for x
   x = 3,676,553,144,356/878,401
6. Step 6: Final answer
   x = 4,185,506.56