Finding the Third Proportional to 72,608 and 156,336

Step by Step Solution

1. Step 1: Write the proportion equation
   72,608 : 156,336 = 156,336 : x
2. Step 2: Convert to fraction form
   72,608/156,336 = 156,336/x
3. Step 3: Cross multiply
   72,608x = 156,336 × 156,336
4. Step 4: Simplify right side
   72,608x = 24,440,944,896
5. Step 5: Solve for x
   x = 24,440,944,896/72,608
6. Step 6: Final answer
   x = 336,615.04