Finding the Third Proportional to 20,731.36 and 31,868.02

Step by Step Solution

1. Step 1: Write the proportion equation
   20,731.36 : 31,868.02 = 31,868.02 : x
2. Step 2: Convert to fraction form
   20,731.36/31,868.02 = 31,868.02/x
3. Step 3: Cross multiply
   20,731.36x = 31,868.02 × 31,868.02
4. Step 4: Simplify right side
   20,731.36x = 1,015,570,419.88
5. Step 5: Solve for x
   x = 1,015,570,419.88/20,731.36
6. Step 6: Final answer
   x = 48,987.16