Finding the Third Proportional to 911.91 and 1,504.78

Step by Step Solution

1. Step 1: Write the proportion equation
   911.91 : 1,504.78 = 1,504.78 : x
2. Step 2: Convert to fraction form
   911.91/1,504.78 = 1,504.78/x
3. Step 3: Cross multiply
   911.91x = 1,504.78 × 1,504.78
4. Step 4: Simplify right side
   911.91x = 2,264,366.61
5. Step 5: Solve for x
   x = 2,264,366.61/911.91
6. Step 6: Final answer
   x = 2,483.11