Finding the Third Proportional to 878,374 and 1,917,380

Step by Step Solution

1. Step 1: Write the proportion equation
   878,374 : 1,917,380 = 1,917,380 : x
2. Step 2: Convert to fraction form
   878,374/1,917,380 = 1,917,380/x
3. Step 3: Cross multiply
   878,374x = 1,917,380 × 1,917,380
4. Step 4: Simplify right side
   878,374x = 3,676,346,064,400
5. Step 5: Solve for x
   x = 3,676,346,064,400/878,374
6. Step 6: Final answer
   x = 4,185,399.46