Finding the Third Proportional to 391.50 and 844.59

Step by Step Solution

1. Step 1: Write the proportion equation
   391.50 : 844.59 = 844.59 : x
2. Step 2: Convert to fraction form
   391.50/844.59 = 844.59/x
3. Step 3: Cross multiply
   391.50x = 844.59 × 844.59
4. Step 4: Simplify right side
   391.50x = 713,338.60
5. Step 5: Solve for x
   x = 713,338.60/391.50
6. Step 6: Final answer
   x = 1,822.07