Finding the Third Proportional to 300,930 and 635,636

Step by Step Solution

1. Step 1: Write the proportion equation
   300,930 : 635,636 = 635,636 : x
2. Step 2: Convert to fraction form
   300,930/635,636 = 635,636/x
3. Step 3: Cross multiply
   300,930x = 635,636 × 635,636
4. Step 4: Simplify right side
   300,930x = 404,033,124,496
5. Step 5: Solve for x
   x = 404,033,124,496/300,930
6. Step 6: Final answer
   x = 1,342,614.98