Finding the Third Proportional to 78,992 and 173,992

Step by Step Solution

1. Step 1: Write the proportion equation
   78,992 : 173,992 = 173,992 : x
2. Step 2: Convert to fraction form
   78,992/173,992 = 173,992/x
3. Step 3: Cross multiply
   78,992x = 173,992 × 173,992
4. Step 4: Simplify right side
   78,992x = 30,273,216,064
5. Step 5: Solve for x
   x = 30,273,216,064/78,992
6. Step 6: Final answer
   x = 383,244.08