Finding the Third Proportional to 30,988 and 67,916

Step by Step Solution

1. Step 1: Write the proportion equation
   30,988 : 67,916 = 67,916 : x
2. Step 2: Convert to fraction form
   30,988/67,916 = 67,916/x
3. Step 3: Cross multiply
   30,988x = 67,916 × 67,916
4. Step 4: Simplify right side
   30,988x = 4,612,583,056
5. Step 5: Solve for x
   x = 4,612,583,056/30,988
6. Step 6: Final answer
   x = 148,850.62