Finding the Third Proportional to 607.50 and 818.86

Step by Step Solution

1. Step 1: Write the proportion equation
   607.50 : 818.86 = 818.86 : x
2. Step 2: Convert to fraction form
   607.50/818.86 = 818.86/x
3. Step 3: Cross multiply
   607.50x = 818.86 × 818.86
4. Step 4: Simplify right side
   607.50x = 670,530.68
5. Step 5: Solve for x
   x = 670,530.68/607.50
6. Step 6: Final answer
   x = 1,103.75