Finding the Third Proportional to 636,453 and 1,384,990

Step by Step Solution

1. Step 1: Write the proportion equation
   636,453 : 1,384,990 = 1,384,990 : x
2. Step 2: Convert to fraction form
   636,453/1,384,990 = 1,384,990/x
3. Step 3: Cross multiply
   636,453x = 1,384,990 × 1,384,990
4. Step 4: Simplify right side
   636,453x = 1,918,197,300,100
5. Step 5: Solve for x
   x = 1,918,197,300,100/636,453
6. Step 6: Final answer
   x = 3,013,886.81