Finding the Third Proportional to 16,803 and 25,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,803 : 25,690.50 = 25,690.50 : x
2. Step 2: Convert to fraction form
   16,803/25,690.50 = 25,690.50/x
3. Step 3: Cross multiply
   16,803x = 25,690.50 × 25,690.50
4. Step 4: Simplify right side
   16,803x = 660,001,790.25
5. Step 5: Solve for x
   x = 660,001,790.25/16,803
6. Step 6: Final answer
   x = 39,278.81