Finding the Third Proportional to 40,908 and 86,190

Step by Step Solution

1. Step 1: Write the proportion equation
   40,908 : 86,190 = 86,190 : x
2. Step 2: Convert to fraction form
   40,908/86,190 = 86,190/x
3. Step 3: Cross multiply
   40,908x = 86,190 × 86,190
4. Step 4: Simplify right side
   40,908x = 7,428,716,100
5. Step 5: Solve for x
   x = 7,428,716,100/40,908
6. Step 6: Final answer
   x = 181,595.68