Finding the Third Proportional to 322.31 and 751.78

Step by Step Solution

1. Step 1: Write the proportion equation
   322.31 : 751.78 = 751.78 : x
2. Step 2: Convert to fraction form
   322.31/751.78 = 751.78/x
3. Step 3: Cross multiply
   322.31x = 751.78 × 751.78
4. Step 4: Simplify right side
   322.31x = 565,175.05
5. Step 5: Solve for x
   x = 565,175.05/322.31
6. Step 6: Final answer
   x = 1,753.50