Finding the Third Proportional to 1,247.06 and 1,908.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247.06 : 1,908.56 = 1,908.56 : x
2. Step 2: Convert to fraction form
   1,247.06/1,908.56 = 1,908.56/x
3. Step 3: Cross multiply
   1,247.06x = 1,908.56 × 1,908.56
4. Step 4: Simplify right side
   1,247.06x = 3,642,610.82
5. Step 5: Solve for x
   x = 3,642,610.82/1,247.06
6. Step 6: Final answer
   x = 2,920.95