Finding the Third Proportional to 1,256.91 and 2,064.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,256.91 : 2,064.94 = 2,064.94 : x
2. Step 2: Convert to fraction form
   1,256.91/2,064.94 = 2,064.94/x
3. Step 3: Cross multiply
   1,256.91x = 2,064.94 × 2,064.94
4. Step 4: Simplify right side
   1,256.91x = 4,263,966.88
5. Step 5: Solve for x
   x = 4,263,966.88/1,256.91
6. Step 6: Final answer
   x = 3,392.43