Finding the Third Proportional to 40,770 and 60,399

Step by Step Solution

1. Step 1: Write the proportion equation
   40,770 : 60,399 = 60,399 : x
2. Step 2: Convert to fraction form
   40,770/60,399 = 60,399/x
3. Step 3: Cross multiply
   40,770x = 60,399 × 60,399
4. Step 4: Simplify right side
   40,770x = 3,648,039,201
5. Step 5: Solve for x
   x = 3,648,039,201/40,770
6. Step 6: Final answer
   x = 89,478.52