Finding the Third Proportional to 813,618 and 1,683,812

Step by Step Solution

1. Step 1: Write the proportion equation
   813,618 : 1,683,812 = 1,683,812 : x
2. Step 2: Convert to fraction form
   813,618/1,683,812 = 1,683,812/x
3. Step 3: Cross multiply
   813,618x = 1,683,812 × 1,683,812
4. Step 4: Simplify right side
   813,618x = 2,835,222,851,344
5. Step 5: Solve for x
   x = 2,835,222,851,344/813,618
6. Step 6: Final answer
   x = 3,484,710.09