Finding the Third Proportional to 15,990 and 25,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,990 : 25,300.50 = 25,300.50 : x
2. Step 2: Convert to fraction form
   15,990/25,300.50 = 25,300.50/x
3. Step 3: Cross multiply
   15,990x = 25,300.50 × 25,300.50
4. Step 4: Simplify right side
   15,990x = 640,115,300.25
5. Step 5: Solve for x
   x = 640,115,300.25/15,990
6. Step 6: Final answer
   x = 40,032.23