Finding the Third Proportional to 308,868 and 676,784

Step by Step Solution

1. Step 1: Write the proportion equation
   308,868 : 676,784 = 676,784 : x
2. Step 2: Convert to fraction form
   308,868/676,784 = 676,784/x
3. Step 3: Cross multiply
   308,868x = 676,784 × 676,784
4. Step 4: Simplify right side
   308,868x = 458,036,582,656
5. Step 5: Solve for x
   x = 458,036,582,656/308,868
6. Step 6: Final answer
   x = 1,482,952.53