Finding the Third Proportional to 308,860.50 and 676,770

Step by Step Solution

1. Step 1: Write the proportion equation
   308,860.50 : 676,770 = 676,770 : x
2. Step 2: Convert to fraction form
   308,860.50/676,770 = 676,770/x
3. Step 3: Cross multiply
   308,860.50x = 676,770 × 676,770
4. Step 4: Simplify right side
   308,860.50x = 458,017,632,900
5. Step 5: Solve for x
   x = 458,017,632,900/308,860.50
6. Step 6: Final answer
   x = 1,482,927.19