Finding the Third Proportional to 39,886 and 87,016

Step by Step Solution

1. Step 1: Write the proportion equation
   39,886 : 87,016 = 87,016 : x
2. Step 2: Convert to fraction form
   39,886/87,016 = 87,016/x
3. Step 3: Cross multiply
   39,886x = 87,016 × 87,016
4. Step 4: Simplify right side
   39,886x = 7,571,784,256
5. Step 5: Solve for x
   x = 7,571,784,256/39,886
6. Step 6: Final answer
   x = 189,835.64