Finding the Third Proportional to 81,504 and 171,216

Step by Step Solution

1. Step 1: Write the proportion equation
   81,504 : 171,216 = 171,216 : x
2. Step 2: Convert to fraction form
   81,504/171,216 = 171,216/x
3. Step 3: Cross multiply
   81,504x = 171,216 × 171,216
4. Step 4: Simplify right side
   81,504x = 29,314,918,656
5. Step 5: Solve for x
   x = 29,314,918,656/81,504
6. Step 6: Final answer
   x = 359,674.60