Finding the Third Proportional to 127,124 and 279,142

Step by Step Solution

1. Step 1: Write the proportion equation
   127,124 : 279,142 = 279,142 : x
2. Step 2: Convert to fraction form
   127,124/279,142 = 279,142/x
3. Step 3: Cross multiply
   127,124x = 279,142 × 279,142
4. Step 4: Simplify right side
   127,124x = 77,920,256,164
5. Step 5: Solve for x
   x = 77,920,256,164/127,124
6. Step 6: Final answer
   x = 612,946.86