Finding the Third Proportional to 831.56 and 1,779.56

Step by Step Solution

1. Step 1: Write the proportion equation
   831.56 : 1,779.56 = 1,779.56 : x
2. Step 2: Convert to fraction form
   831.56/1,779.56 = 1,779.56/x
3. Step 3: Cross multiply
   831.56x = 1,779.56 × 1,779.56
4. Step 4: Simplify right side
   831.56x = 3,166,842.69
5. Step 5: Solve for x
   x = 3,166,842.69/831.56
6. Step 6: Final answer
   x = 3,808.30