Finding the Third Proportional to 16,989 and 25,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,989 : 25,971.50 = 25,971.50 : x
2. Step 2: Convert to fraction form
   16,989/25,971.50 = 25,971.50/x
3. Step 3: Cross multiply
   16,989x = 25,971.50 × 25,971.50
4. Step 4: Simplify right side
   16,989x = 674,518,812.25
5. Step 5: Solve for x
   x = 674,518,812.25/16,989
6. Step 6: Final answer
   x = 39,703.27