Finding the Third Proportional to 150,272 and 317,310

Step by Step Solution

1. Step 1: Write the proportion equation
   150,272 : 317,310 = 317,310 : x
2. Step 2: Convert to fraction form
   150,272/317,310 = 317,310/x
3. Step 3: Cross multiply
   150,272x = 317,310 × 317,310
4. Step 4: Simplify right side
   150,272x = 100,685,636,100
5. Step 5: Solve for x
   x = 100,685,636,100/150,272
6. Step 6: Final answer
   x = 670,022.60