Finding the Third Proportional to 21,087 and 31,968

Step by Step Solution

1. Step 1: Write the proportion equation
   21,087 : 31,968 = 31,968 : x
2. Step 2: Convert to fraction form
   21,087/31,968 = 31,968/x
3. Step 3: Cross multiply
   21,087x = 31,968 × 31,968
4. Step 4: Simplify right side
   21,087x = 1,021,953,024
5. Step 5: Solve for x
   x = 1,021,953,024/21,087
6. Step 6: Final answer
   x = 48,463.65