Finding the Third Proportional to 1,153.17 and 2,388.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.17 : 2,388.40 = 2,388.40 : x
2. Step 2: Convert to fraction form
   1,153.17/2,388.40 = 2,388.40/x
3. Step 3: Cross multiply
   1,153.17x = 2,388.40 × 2,388.40
4. Step 4: Simplify right side
   1,153.17x = 5,704,447.10
5. Step 5: Solve for x
   x = 5,704,447.10/1,153.17
6. Step 6: Final answer
   x = 4,946.74