Finding the Third Proportional to 16,699.50 and 40,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,699.50 : 40,909.50 = 40,909.50 : x
2. Step 2: Convert to fraction form
   16,699.50/40,909.50 = 40,909.50/x
3. Step 3: Cross multiply
   16,699.50x = 40,909.50 × 40,909.50
4. Step 4: Simplify right side
   16,699.50x = 1,673,587,190.25
5. Step 5: Solve for x
   x = 1,673,587,190.25/16,699.50
6. Step 6: Final answer
   x = 100,217.80