Finding the Third Proportional to 173,124 and 258,996

Step by Step Solution

1. Step 1: Write the proportion equation
   173,124 : 258,996 = 258,996 : x
2. Step 2: Convert to fraction form
   173,124/258,996 = 258,996/x
3. Step 3: Cross multiply
   173,124x = 258,996 × 258,996
4. Step 4: Simplify right side
   173,124x = 67,078,928,016
5. Step 5: Solve for x
   x = 67,078,928,016/173,124
6. Step 6: Final answer
   x = 387,461.75