Finding the Third Proportional to 878,424 and 1,917,468

Step by Step Solution

1. Step 1: Write the proportion equation
   878,424 : 1,917,468 = 1,917,468 : x
2. Step 2: Convert to fraction form
   878,424/1,917,468 = 1,917,468/x
3. Step 3: Cross multiply
   878,424x = 1,917,468 × 1,917,468
4. Step 4: Simplify right side
   878,424x = 3,676,683,531,024
5. Step 5: Solve for x
   x = 3,676,683,531,024/878,424
6. Step 6: Final answer
   x = 4,185,545.40