Finding the Third Proportional to 40,403 and 86,760

Step by Step Solution

1. Step 1: Write the proportion equation
   40,403 : 86,760 = 86,760 : x
2. Step 2: Convert to fraction form
   40,403/86,760 = 86,760/x
3. Step 3: Cross multiply
   40,403x = 86,760 × 86,760
4. Step 4: Simplify right side
   40,403x = 7,527,297,600
5. Step 5: Solve for x
   x = 7,527,297,600/40,403
6. Step 6: Final answer
   x = 186,305.41