Finding the Third Proportional to 39,866 and 59,979

Step by Step Solution

1. Step 1: Write the proportion equation
   39,866 : 59,979 = 59,979 : x
2. Step 2: Convert to fraction form
   39,866/59,979 = 59,979/x
3. Step 3: Cross multiply
   39,866x = 59,979 × 59,979
4. Step 4: Simplify right side
   39,866x = 3,597,480,441
5. Step 5: Solve for x
   x = 3,597,480,441/39,866
6. Step 6: Final answer
   x = 90,239.31