Finding the Third Proportional to 155,528 and 317,824

Step by Step Solution

1. Step 1: Write the proportion equation
   155,528 : 317,824 = 317,824 : x
2. Step 2: Convert to fraction form
   155,528/317,824 = 317,824/x
3. Step 3: Cross multiply
   155,528x = 317,824 × 317,824
4. Step 4: Simplify right side
   155,528x = 101,012,094,976
5. Step 5: Solve for x
   x = 101,012,094,976/155,528
6. Step 6: Final answer
   x = 649,478.52