Finding the Third Proportional to 21,372.75 and 31,880.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,372.75 : 31,880.25 = 31,880.25 : x
2. Step 2: Convert to fraction form
   21,372.75/31,880.25 = 31,880.25/x
3. Step 3: Cross multiply
   21,372.75x = 31,880.25 × 31,880.25
4. Step 4: Simplify right side
   21,372.75x = 1,016,350,340.06
5. Step 5: Solve for x
   x = 1,016,350,340.06/21,372.75
6. Step 6: Final answer
   x = 47,553.56