Finding the Third Proportional to 308,799.84 and 656,965.69

Step by Step Solution

1. Step 1: Write the proportion equation
   308,799.84 : 656,965.69 = 656,965.69 : x
2. Step 2: Convert to fraction form
   308,799.84/656,965.69 = 656,965.69/x
3. Step 3: Cross multiply
   308,799.84x = 656,965.69 × 656,965.69
4. Step 4: Simplify right side
   308,799.84x = 431,603,914,552.35
5. Step 5: Solve for x
   x = 431,603,914,552.35/308,799.84
6. Step 6: Final answer
   x = 1,397,681.78