Finding the Third Proportional to 603,815 and 1,279,618

Step by Step Solution

1. Step 1: Write the proportion equation
   603,815 : 1,279,618 = 1,279,618 : x
2. Step 2: Convert to fraction form
   603,815/1,279,618 = 1,279,618/x
3. Step 3: Cross multiply
   603,815x = 1,279,618 × 1,279,618
4. Step 4: Simplify right side
   603,815x = 1,637,422,225,924
5. Step 5: Solve for x
   x = 1,637,422,225,924/603,815
6. Step 6: Final answer
   x = 2,711,794.55