Finding the Third Proportional to 20,900 and 31,350

Step by Step Solution

1. Step 1: Write the proportion equation
   20,900 : 31,350 = 31,350 : x
2. Step 2: Convert to fraction form
   20,900/31,350 = 31,350/x
3. Step 3: Cross multiply
   20,900x = 31,350 × 31,350
4. Step 4: Simplify right side
   20,900x = 982,822,500
5. Step 5: Solve for x
   x = 982,822,500/20,900
6. Step 6: Final answer
   x = 47,025