Finding the Third Proportional to 20,436 and 31,248

Step by Step Solution

1. Step 1: Write the proportion equation
   20,436 : 31,248 = 31,248 : x
2. Step 2: Convert to fraction form
   20,436/31,248 = 31,248/x
3. Step 3: Cross multiply
   20,436x = 31,248 × 31,248
4. Step 4: Simplify right side
   20,436x = 976,437,504
5. Step 5: Solve for x
   x = 976,437,504/20,436
6. Step 6: Final answer
   x = 47,780.27