Finding the Third Proportional to 137,200 and 300,636

Step by Step Solution

1. Step 1: Write the proportion equation
   137,200 : 300,636 = 300,636 : x
2. Step 2: Convert to fraction form
   137,200/300,636 = 300,636/x
3. Step 3: Cross multiply
   137,200x = 300,636 × 300,636
4. Step 4: Simplify right side
   137,200x = 90,382,004,496
5. Step 5: Solve for x
   x = 90,382,004,496/137,200
6. Step 6: Final answer
   x = 658,760.97