Finding the Third Proportional to 76,929.75 and 173,613.38

Step by Step Solution

1. Step 1: Write the proportion equation
   76,929.75 : 173,613.38 = 173,613.38 : x
2. Step 2: Convert to fraction form
   76,929.75/173,613.38 = 173,613.38/x
3. Step 3: Cross multiply
   76,929.75x = 173,613.38 × 173,613.38
4. Step 4: Simplify right side
   76,929.75x = 30,141,603,978.89
5. Step 5: Solve for x
   x = 30,141,603,978.89/76,929.75
6. Step 6: Final answer
   x = 391,806.86