Finding the Third Proportional to 140,078 and 299,836

Step by Step Solution

1. Step 1: Write the proportion equation
   140,078 : 299,836 = 299,836 : x
2. Step 2: Convert to fraction form
   140,078/299,836 = 299,836/x
3. Step 3: Cross multiply
   140,078x = 299,836 × 299,836
4. Step 4: Simplify right side
   140,078x = 89,901,626,896
5. Step 5: Solve for x
   x = 89,901,626,896/140,078
6. Step 6: Final answer
   x = 641,796.91