Finding the Third Proportional to 31,907 and 69,949

Step by Step Solution

1. Step 1: Write the proportion equation
   31,907 : 69,949 = 69,949 : x
2. Step 2: Convert to fraction form
   31,907/69,949 = 69,949/x
3. Step 3: Cross multiply
   31,907x = 69,949 × 69,949
4. Step 4: Simplify right side
   31,907x = 4,892,862,601
5. Step 5: Solve for x
   x = 4,892,862,601/31,907
6. Step 6: Final answer
   x = 153,347.62