Finding the Third Proportional to 40,959 and 86,040

Step by Step Solution

1. Step 1: Write the proportion equation
   40,959 : 86,040 = 86,040 : x
2. Step 2: Convert to fraction form
   40,959/86,040 = 86,040/x
3. Step 3: Cross multiply
   40,959x = 86,040 × 86,040
4. Step 4: Simplify right side
   40,959x = 7,402,881,600
5. Step 5: Solve for x
   x = 7,402,881,600/40,959
6. Step 6: Final answer
   x = 180,738.83