Finding the Third Proportional to 31,068 and 39,906

Step by Step Solution

1. Step 1: Write the proportion equation
   31,068 : 39,906 = 39,906 : x
2. Step 2: Convert to fraction form
   31,068/39,906 = 39,906/x
3. Step 3: Cross multiply
   31,068x = 39,906 × 39,906
4. Step 4: Simplify right side
   31,068x = 1,592,488,836
5. Step 5: Solve for x
   x = 1,592,488,836/31,068
6. Step 6: Final answer
   x = 51,258.17