Finding the Third Proportional to 127,908 and 279,144

Step by Step Solution

1. Step 1: Write the proportion equation
   127,908 : 279,144 = 279,144 : x
2. Step 2: Convert to fraction form
   127,908/279,144 = 279,144/x
3. Step 3: Cross multiply
   127,908x = 279,144 × 279,144
4. Step 4: Simplify right side
   127,908x = 77,921,372,736
5. Step 5: Solve for x
   x = 77,921,372,736/127,908
6. Step 6: Final answer
   x = 609,198.59