Finding the Third Proportional to 155,978 and 244,431

Step by Step Solution

1. Step 1: Write the proportion equation
   155,978 : 244,431 = 244,431 : x
2. Step 2: Convert to fraction form
   155,978/244,431 = 244,431/x
3. Step 3: Cross multiply
   155,978x = 244,431 × 244,431
4. Step 4: Simplify right side
   155,978x = 59,746,513,761
5. Step 5: Solve for x
   x = 59,746,513,761/155,978
6. Step 6: Final answer
   x = 383,044.49