Finding the Third Proportional to 118,536 and 279,800

Step by Step Solution

1. Step 1: Write the proportion equation
   118,536 : 279,800 = 279,800 : x
2. Step 2: Convert to fraction form
   118,536/279,800 = 279,800/x
3. Step 3: Cross multiply
   118,536x = 279,800 × 279,800
4. Step 4: Simplify right side
   118,536x = 78,288,040,000
5. Step 5: Solve for x
   x = 78,288,040,000/118,536
6. Step 6: Final answer
   x = 660,457.92