Finding the Third Proportional to 173,836 and 418,636

Step by Step Solution

1. Step 1: Write the proportion equation
   173,836 : 418,636 = 418,636 : x
2. Step 2: Convert to fraction form
   173,836/418,636 = 418,636/x
3. Step 3: Cross multiply
   173,836x = 418,636 × 418,636
4. Step 4: Simplify right side
   173,836x = 175,256,100,496
5. Step 5: Solve for x
   x = 175,256,100,496/173,836
6. Step 6: Final answer
   x = 1,008,169.20