Finding the Third Proportional to 140,198 and 300,079

Step by Step Solution

1. Step 1: Write the proportion equation
   140,198 : 300,079 = 300,079 : x
2. Step 2: Convert to fraction form
   140,198/300,079 = 300,079/x
3. Step 3: Cross multiply
   140,198x = 300,079 × 300,079
4. Step 4: Simplify right side
   140,198x = 90,047,406,241
5. Step 5: Solve for x
   x = 90,047,406,241/140,198
6. Step 6: Final answer
   x = 642,287.38