Finding the Third Proportional to 321.47 and 436.22

Step by Step Solution

1. Step 1: Write the proportion equation
   321.47 : 436.22 = 436.22 : x
2. Step 2: Convert to fraction form
   321.47/436.22 = 436.22/x
3. Step 3: Cross multiply
   321.47x = 436.22 × 436.22
4. Step 4: Simplify right side
   321.47x = 190,286.80
5. Step 5: Solve for x
   x = 190,286.80/321.47
6. Step 6: Final answer
   x = 591.93