Finding the Third Proportional to 308,866.50 and 676,782

Step by Step Solution

1. Step 1: Write the proportion equation
   308,866.50 : 676,782 = 676,782 : x
2. Step 2: Convert to fraction form
   308,866.50/676,782 = 676,782/x
3. Step 3: Cross multiply
   308,866.50x = 676,782 × 676,782
4. Step 4: Simplify right side
   308,866.50x = 458,033,875,524
5. Step 5: Solve for x
   x = 458,033,875,524/308,866.50
6. Step 6: Final answer
   x = 1,482,950.97