Finding the Third Proportional to 8,212.78 and 17,008.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,212.78 : 17,008.59 = 17,008.59 : x
2. Step 2: Convert to fraction form
   8,212.78/17,008.59 = 17,008.59/x
3. Step 3: Cross multiply
   8,212.78x = 17,008.59 × 17,008.59
4. Step 4: Simplify right side
   8,212.78x = 289,292,261.35
5. Step 5: Solve for x
   x = 289,292,261.35/8,212.78
6. Step 6: Final answer
   x = 35,224.64