Finding the Third Proportional to 817.38 and 1,250.59

Step by Step Solution

1. Step 1: Write the proportion equation
   817.38 : 1,250.59 = 1,250.59 : x
2. Step 2: Convert to fraction form
   817.38/1,250.59 = 1,250.59/x
3. Step 3: Cross multiply
   817.38x = 1,250.59 × 1,250.59
4. Step 4: Simplify right side
   817.38x = 1,563,984.73
5. Step 5: Solve for x
   x = 1,563,984.73/817.38
6. Step 6: Final answer
   x = 1,913.42