Finding the Third Proportional to 830 and 1,180.25

Step by Step Solution

1. Step 1: Write the proportion equation
   830 : 1,180.25 = 1,180.25 : x
2. Step 2: Convert to fraction form
   830/1,180.25 = 1,180.25/x
3. Step 3: Cross multiply
   830x = 1,180.25 × 1,180.25
4. Step 4: Simplify right side
   830x = 1,392,990.06
5. Step 5: Solve for x
   x = 1,392,990.06/830
6. Step 6: Final answer
   x = 1,678.30