Finding the Third Proportional to 30,992 and 67,915

Step by Step Solution

1. Step 1: Write the proportion equation
   30,992 : 67,915 = 67,915 : x
2. Step 2: Convert to fraction form
   30,992/67,915 = 67,915/x
3. Step 3: Cross multiply
   30,992x = 67,915 × 67,915
4. Step 4: Simplify right side
   30,992x = 4,612,447,225
5. Step 5: Solve for x
   x = 4,612,447,225/30,992
6. Step 6: Final answer
   x = 148,827.03