Finding the Third Proportional to 990,256 and 2,114,144

Step by Step Solution

1. Step 1: Write the proportion equation
   990,256 : 2,114,144 = 2,114,144 : x
2. Step 2: Convert to fraction form
   990,256/2,114,144 = 2,114,144/x
3. Step 3: Cross multiply
   990,256x = 2,114,144 × 2,114,144
4. Step 4: Simplify right side
   990,256x = 4,469,604,852,736
5. Step 5: Solve for x
   x = 4,469,604,852,736/990,256
6. Step 6: Final answer
   x = 4,513,585.23