Finding the Third Proportional to 140,296 and 300,329

Step by Step Solution

1. Step 1: Write the proportion equation
   140,296 : 300,329 = 300,329 : x
2. Step 2: Convert to fraction form
   140,296/300,329 = 300,329/x
3. Step 3: Cross multiply
   140,296x = 300,329 × 300,329
4. Step 4: Simplify right side
   140,296x = 90,197,508,241
5. Step 5: Solve for x
   x = 90,197,508,241/140,296
6. Step 6: Final answer
   x = 642,908.62