Finding the Third Proportional to 10,998 and 16,890

Step by Step Solution

1. Step 1: Write the proportion equation
   10,998 : 16,890 = 16,890 : x
2. Step 2: Convert to fraction form
   10,998/16,890 = 16,890/x
3. Step 3: Cross multiply
   10,998x = 16,890 × 16,890
4. Step 4: Simplify right side
   10,998x = 285,272,100
5. Step 5: Solve for x
   x = 285,272,100/10,998
6. Step 6: Final answer
   x = 25,938.54