Finding the Third Proportional to 140,655 and 301,631

Step by Step Solution

1. Step 1: Write the proportion equation
   140,655 : 301,631 = 301,631 : x
2. Step 2: Convert to fraction form
   140,655/301,631 = 301,631/x
3. Step 3: Cross multiply
   140,655x = 301,631 × 301,631
4. Step 4: Simplify right side
   140,655x = 90,981,260,161
5. Step 5: Solve for x
   x = 90,981,260,161/140,655
6. Step 6: Final answer
   x = 646,839.86