Finding the Third Proportional to 636,203 and 1,384,355

Step by Step Solution

1. Step 1: Write the proportion equation
   636,203 : 1,384,355 = 1,384,355 : x
2. Step 2: Convert to fraction form
   636,203/1,384,355 = 1,384,355/x
3. Step 3: Cross multiply
   636,203x = 1,384,355 × 1,384,355
4. Step 4: Simplify right side
   636,203x = 1,916,438,766,025
5. Step 5: Solve for x
   x = 1,916,438,766,025/636,203
6. Step 6: Final answer
   x = 3,012,307.02