Finding the Third Proportional to 890,978 and 1,869,436

Step by Step Solution

1. Step 1: Write the proportion equation
   890,978 : 1,869,436 = 1,869,436 : x
2. Step 2: Convert to fraction form
   890,978/1,869,436 = 1,869,436/x
3. Step 3: Cross multiply
   890,978x = 1,869,436 × 1,869,436
4. Step 4: Simplify right side
   890,978x = 3,494,790,958,096
5. Step 5: Solve for x
   x = 3,494,790,958,096/890,978
6. Step 6: Final answer
   x = 3,922,421.16