Finding the Third Proportional to 15,990 and 25,030

Step by Step Solution

1. Step 1: Write the proportion equation
   15,990 : 25,030 = 25,030 : x
2. Step 2: Convert to fraction form
   15,990/25,030 = 25,030/x
3. Step 3: Cross multiply
   15,990x = 25,030 × 25,030
4. Step 4: Simplify right side
   15,990x = 626,500,900
5. Step 5: Solve for x
   x = 626,500,900/15,990
6. Step 6: Final answer
   x = 39,180.79