Finding the Third Proportional to 21,520 and 31,573

Step by Step Solution

1. Step 1: Write the proportion equation
   21,520 : 31,573 = 31,573 : x
2. Step 2: Convert to fraction form
   21,520/31,573 = 31,573/x
3. Step 3: Cross multiply
   21,520x = 31,573 × 31,573
4. Step 4: Simplify right side
   21,520x = 996,854,329
5. Step 5: Solve for x
   x = 996,854,329/21,520
6. Step 6: Final answer
   x = 46,322.23