Finding the Third Proportional to 878,402 and 1,917,436

Step by Step Solution

1. Step 1: Write the proportion equation
   878,402 : 1,917,436 = 1,917,436 : x
2. Step 2: Convert to fraction form
   878,402/1,917,436 = 1,917,436/x
3. Step 3: Cross multiply
   878,402x = 1,917,436 × 1,917,436
4. Step 4: Simplify right side
   878,402x = 3,676,560,814,096
5. Step 5: Solve for x
   x = 3,676,560,814,096/878,402
6. Step 6: Final answer
   x = 4,185,510.52