Finding the Third Proportional to 20,740 and 31,260

Step by Step Solution

1. Step 1: Write the proportion equation
   20,740 : 31,260 = 31,260 : x
2. Step 2: Convert to fraction form
   20,740/31,260 = 31,260/x
3. Step 3: Cross multiply
   20,740x = 31,260 × 31,260
4. Step 4: Simplify right side
   20,740x = 977,187,600
5. Step 5: Solve for x
   x = 977,187,600/20,740
6. Step 6: Final answer
   x = 47,116.08