Finding the Third Proportional to 67,158 and 90,874

Step by Step Solution

1. Step 1: Write the proportion equation
   67,158 : 90,874 = 90,874 : x
2. Step 2: Convert to fraction form
   67,158/90,874 = 90,874/x
3. Step 3: Cross multiply
   67,158x = 90,874 × 90,874
4. Step 4: Simplify right side
   67,158x = 8,258,083,876
5. Step 5: Solve for x
   x = 8,258,083,876/67,158
6. Step 6: Final answer
   x = 122,965.01