Finding the Third Proportional to 601.31 and 817.88

Step by Step Solution

1. Step 1: Write the proportion equation
   601.31 : 817.88 = 817.88 : x
2. Step 2: Convert to fraction form
   601.31/817.88 = 817.88/x
3. Step 3: Cross multiply
   601.31x = 817.88 × 817.88
4. Step 4: Simplify right side
   601.31x = 668,919.52
5. Step 5: Solve for x
   x = 668,919.52/601.31
6. Step 6: Final answer
   x = 1,112.43