Finding the Third Proportional to 878,376 and 1,917,384

Step by Step Solution

1. Step 1: Write the proportion equation
   878,376 : 1,917,384 = 1,917,384 : x
2. Step 2: Convert to fraction form
   878,376/1,917,384 = 1,917,384/x
3. Step 3: Cross multiply
   878,376x = 1,917,384 × 1,917,384
4. Step 4: Simplify right side
   878,376x = 3,676,361,403,456
5. Step 5: Solve for x
   x = 3,676,361,403,456/878,376
6. Step 6: Final answer
   x = 4,185,407.39