Finding the Third Proportional to 603,807 and 1,279,605

Step by Step Solution

1. Step 1: Write the proportion equation
   603,807 : 1,279,605 = 1,279,605 : x
2. Step 2: Convert to fraction form
   603,807/1,279,605 = 1,279,605/x
3. Step 3: Cross multiply
   603,807x = 1,279,605 × 1,279,605
4. Step 4: Simplify right side
   603,807x = 1,637,388,956,025
5. Step 5: Solve for x
   x = 1,637,388,956,025/603,807
6. Step 6: Final answer
   x = 2,711,775.38