Finding the Third Proportional to 137,707 and 300,685

Step by Step Solution

1. Step 1: Write the proportion equation
   137,707 : 300,685 = 300,685 : x
2. Step 2: Convert to fraction form
   137,707/300,685 = 300,685/x
3. Step 3: Cross multiply
   137,707x = 300,685 × 300,685
4. Step 4: Simplify right side
   137,707x = 90,411,469,225
5. Step 5: Solve for x
   x = 90,411,469,225/137,707
6. Step 6: Final answer
   x = 656,549.55