Finding the Third Proportional to 156,728 and 333,424

Step by Step Solution

1. Step 1: Write the proportion equation
   156,728 : 333,424 = 333,424 : x
2. Step 2: Convert to fraction form
   156,728/333,424 = 333,424/x
3. Step 3: Cross multiply
   156,728x = 333,424 × 333,424
4. Step 4: Simplify right side
   156,728x = 111,171,563,776
5. Step 5: Solve for x
   x = 111,171,563,776/156,728
6. Step 6: Final answer
   x = 709,328.03