Finding the Third Proportional to 40,107 and 86,910

Step by Step Solution

1. Step 1: Write the proportion equation
   40,107 : 86,910 = 86,910 : x
2. Step 2: Convert to fraction form
   40,107/86,910 = 86,910/x
3. Step 3: Cross multiply
   40,107x = 86,910 × 86,910
4. Step 4: Simplify right side
   40,107x = 7,553,348,100
5. Step 5: Solve for x
   x = 7,553,348,100/40,107
6. Step 6: Final answer
   x = 188,329.92