Finding the Third Proportional to 830.50 and 1,291.25

Step by Step Solution

1. Step 1: Write the proportion equation
   830.50 : 1,291.25 = 1,291.25 : x
2. Step 2: Convert to fraction form
   830.50/1,291.25 = 1,291.25/x
3. Step 3: Cross multiply
   830.50x = 1,291.25 × 1,291.25
4. Step 4: Simplify right side
   830.50x = 1,667,326.56
5. Step 5: Solve for x
   x = 1,667,326.56/830.50
6. Step 6: Final answer
   x = 2,007.62