Finding the Third Proportional to 1,278.28 and 1,710.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278.28 : 1,710.49 = 1,710.49 : x
2. Step 2: Convert to fraction form
   1,278.28/1,710.49 = 1,710.49/x
3. Step 3: Cross multiply
   1,278.28x = 1,710.49 × 1,710.49
4. Step 4: Simplify right side
   1,278.28x = 2,925,783.52
5. Step 5: Solve for x
   x = 2,925,783.52/1,278.28
6. Step 6: Final answer
   x = 2,288.84