Finding the Third Proportional to 14,864 and 31,990

Step by Step Solution

1. Step 1: Write the proportion equation
   14,864 : 31,990 = 31,990 : x
2. Step 2: Convert to fraction form
   14,864/31,990 = 31,990/x
3. Step 3: Cross multiply
   14,864x = 31,990 × 31,990
4. Step 4: Simplify right side
   14,864x = 1,023,360,100
5. Step 5: Solve for x
   x = 1,023,360,100/14,864
6. Step 6: Final answer
   x = 68,848.23