Finding the Third Proportional to 20,298.09 and 31,369.78

Step by Step Solution

1. Step 1: Write the proportion equation
   20,298.09 : 31,369.78 = 31,369.78 : x
2. Step 2: Convert to fraction form
   20,298.09/31,369.78 = 31,369.78/x
3. Step 3: Cross multiply
   20,298.09x = 31,369.78 × 31,369.78
4. Step 4: Simplify right side
   20,298.09x = 984,063,175.67
5. Step 5: Solve for x
   x = 984,063,175.67/20,298.09
6. Step 6: Final answer
   x = 48,480.57