Finding the Third Proportional to 127,872 and 279,068

Step by Step Solution

1. Step 1: Write the proportion equation
   127,872 : 279,068 = 279,068 : x
2. Step 2: Convert to fraction form
   127,872/279,068 = 279,068/x
3. Step 3: Cross multiply
   127,872x = 279,068 × 279,068
4. Step 4: Simplify right side
   127,872x = 77,878,948,624
5. Step 5: Solve for x
   x = 77,878,948,624/127,872
6. Step 6: Final answer
   x = 609,038.32