Finding the Third Proportional to 706.78 and 1,323.56

Step by Step Solution

1. Step 1: Write the proportion equation
   706.78 : 1,323.56 = 1,323.56 : x
2. Step 2: Convert to fraction form
   706.78/1,323.56 = 1,323.56/x
3. Step 3: Cross multiply
   706.78x = 1,323.56 × 1,323.56
4. Step 4: Simplify right side
   706.78x = 1,751,817.69
5. Step 5: Solve for x
   x = 1,751,817.69/706.78
6. Step 6: Final answer
   x = 2,478.59