Finding the Third Proportional to 40,689 and 60,816

Step by Step Solution

1. Step 1: Write the proportion equation
   40,689 : 60,816 = 60,816 : x
2. Step 2: Convert to fraction form
   40,689/60,816 = 60,816/x
3. Step 3: Cross multiply
   40,689x = 60,816 × 60,816
4. Step 4: Simplify right side
   40,689x = 3,698,585,856
5. Step 5: Solve for x
   x = 3,698,585,856/40,689
6. Step 6: Final answer
   x = 90,898.91