Finding the Third Proportional to 16,603.50 and 25,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,603.50 : 25,390.50 = 25,390.50 : x
2. Step 2: Convert to fraction form
   16,603.50/25,390.50 = 25,390.50/x
3. Step 3: Cross multiply
   16,603.50x = 25,390.50 × 25,390.50
4. Step 4: Simplify right side
   16,603.50x = 644,677,490.25
5. Step 5: Solve for x
   x = 644,677,490.25/16,603.50
6. Step 6: Final answer
   x = 38,827.81