Finding the Third Proportional to 485.25 and 1,047

Step by Step Solution

1. Step 1: Write the proportion equation
   485.25 : 1,047 = 1,047 : x
2. Step 2: Convert to fraction form
   485.25/1,047 = 1,047/x
3. Step 3: Cross multiply
   485.25x = 1,047 × 1,047
4. Step 4: Simplify right side
   485.25x = 1,096,209
5. Step 5: Solve for x
   x = 1,096,209/485.25
6. Step 6: Final answer
   x = 2,259.06