Finding the Third Proportional to 118,587 and 279,928

Step by Step Solution

1. Step 1: Write the proportion equation
   118,587 : 279,928 = 279,928 : x
2. Step 2: Convert to fraction form
   118,587/279,928 = 279,928/x
3. Step 3: Cross multiply
   118,587x = 279,928 × 279,928
4. Step 4: Simplify right side
   118,587x = 78,359,685,184
5. Step 5: Solve for x
   x = 78,359,685,184/118,587
6. Step 6: Final answer
   x = 660,778.04