Finding the Third Proportional to 832.78 and 1,245.38

Step by Step Solution

1. Step 1: Write the proportion equation
   832.78 : 1,245.38 = 1,245.38 : x
2. Step 2: Convert to fraction form
   832.78/1,245.38 = 1,245.38/x
3. Step 3: Cross multiply
   832.78x = 1,245.38 × 1,245.38
4. Step 4: Simplify right side
   832.78x = 1,550,958.89
5. Step 5: Solve for x
   x = 1,550,958.89/832.78
6. Step 6: Final answer
   x = 1,862.38