Finding the Third Proportional to 997,808 and 2,188,768

Step by Step Solution

1. Step 1: Write the proportion equation
   997,808 : 2,188,768 = 2,188,768 : x
2. Step 2: Convert to fraction form
   997,808/2,188,768 = 2,188,768/x
3. Step 3: Cross multiply
   997,808x = 2,188,768 × 2,188,768
4. Step 4: Simplify right side
   997,808x = 4,790,705,357,824
5. Step 5: Solve for x
   x = 4,790,705,357,824/997,808
6. Step 6: Final answer
   x = 4,801,229.65