Finding the Third Proportional to 151,256 and 317,992

Step by Step Solution

1. Step 1: Write the proportion equation
   151,256 : 317,992 = 317,992 : x
2. Step 2: Convert to fraction form
   151,256/317,992 = 317,992/x
3. Step 3: Cross multiply
   151,256x = 317,992 × 317,992
4. Step 4: Simplify right side
   151,256x = 101,118,912,064
5. Step 5: Solve for x
   x = 101,118,912,064/151,256
6. Step 6: Final answer
   x = 668,528.27