Finding the Third Proportional to 40,689 and 88,143

Step by Step Solution

1. Step 1: Write the proportion equation
   40,689 : 88,143 = 88,143 : x
2. Step 2: Convert to fraction form
   40,689/88,143 = 88,143/x
3. Step 3: Cross multiply
   40,689x = 88,143 × 88,143
4. Step 4: Simplify right side
   40,689x = 7,769,188,449
5. Step 5: Solve for x
   x = 7,769,188,449/40,689
6. Step 6: Final answer
   x = 190,940.76