Finding the Third Proportional to 878,724 and 1,917,826

Step by Step Solution

1. Step 1: Write the proportion equation
   878,724 : 1,917,826 = 1,917,826 : x
2. Step 2: Convert to fraction form
   878,724/1,917,826 = 1,917,826/x
3. Step 3: Cross multiply
   878,724x = 1,917,826 × 1,917,826
4. Step 4: Simplify right side
   878,724x = 3,678,056,566,276
5. Step 5: Solve for x
   x = 3,678,056,566,276/878,724
6. Step 6: Final answer
   x = 4,185,678.97