Finding the Third Proportional to 156,268 and 323,608

Step by Step Solution

1. Step 1: Write the proportion equation
   156,268 : 323,608 = 323,608 : x
2. Step 2: Convert to fraction form
   156,268/323,608 = 323,608/x
3. Step 3: Cross multiply
   156,268x = 323,608 × 323,608
4. Step 4: Simplify right side
   156,268x = 104,722,137,664
5. Step 5: Solve for x
   x = 104,722,137,664/156,268
6. Step 6: Final answer
   x = 670,144.48