Finding the Third Proportional to 308,871 and 676,790

Step by Step Solution

1. Step 1: Write the proportion equation
   308,871 : 676,790 = 676,790 : x
2. Step 2: Convert to fraction form
   308,871/676,790 = 676,790/x
3. Step 3: Cross multiply
   308,871x = 676,790 × 676,790
4. Step 4: Simplify right side
   308,871x = 458,044,704,100
5. Step 5: Solve for x
   x = 458,044,704,100/308,871
6. Step 6: Final answer
   x = 1,482,964.42