Finding the Third Proportional to 890,928 and 1,869,336

Step by Step Solution

1. Step 1: Write the proportion equation
   890,928 : 1,869,336 = 1,869,336 : x
2. Step 2: Convert to fraction form
   890,928/1,869,336 = 1,869,336/x
3. Step 3: Cross multiply
   890,928x = 1,869,336 × 1,869,336
4. Step 4: Simplify right side
   890,928x = 3,494,417,080,896
5. Step 5: Solve for x
   x = 3,494,417,080,896/890,928
6. Step 6: Final answer
   x = 3,922,221.64