Finding the Third Proportional to 364.31 and 786.56

Step by Step Solution

1. Step 1: Write the proportion equation
   364.31 : 786.56 = 786.56 : x
2. Step 2: Convert to fraction form
   364.31/786.56 = 786.56/x
3. Step 3: Cross multiply
   364.31x = 786.56 × 786.56
4. Step 4: Simplify right side
   364.31x = 618,680.57
5. Step 5: Solve for x
   x = 618,680.57/364.31
6. Step 6: Final answer
   x = 1,698.21