Finding the Third Proportional to 777.94 and 1,314.56

Step by Step Solution

1. Step 1: Write the proportion equation
   777.94 : 1,314.56 = 1,314.56 : x
2. Step 2: Convert to fraction form
   777.94/1,314.56 = 1,314.56/x
3. Step 3: Cross multiply
   777.94x = 1,314.56 × 1,314.56
4. Step 4: Simplify right side
   777.94x = 1,728,074.57
5. Step 5: Solve for x
   x = 1,728,074.57/777.94
6. Step 6: Final answer
   x = 2,221.35