Finding the Third Proportional to 8,421.75 and 17,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,421.75 : 17,383.50 = 17,383.50 : x
2. Step 2: Convert to fraction form
   8,421.75/17,383.50 = 17,383.50/x
3. Step 3: Cross multiply
   8,421.75x = 17,383.50 × 17,383.50
4. Step 4: Simplify right side
   8,421.75x = 302,186,072.25
5. Step 5: Solve for x
   x = 302,186,072.25/8,421.75
6. Step 6: Final answer
   x = 35,881.62