Finding the Third Proportional to 72,628 and 156,728

Step by Step Solution

1. Step 1: Write the proportion equation
   72,628 : 156,728 = 156,728 : x
2. Step 2: Convert to fraction form
   72,628/156,728 = 156,728/x
3. Step 3: Cross multiply
   72,628x = 156,728 × 156,728
4. Step 4: Simplify right side
   72,628x = 24,563,665,984
5. Step 5: Solve for x
   x = 24,563,665,984/72,628
6. Step 6: Final answer
   x = 338,212.07