Finding the Third Proportional to 1,074.50 and 2,290

Step by Step Solution

1. Step 1: Write the proportion equation
   1,074.50 : 2,290 = 2,290 : x
2. Step 2: Convert to fraction form
   1,074.50/2,290 = 2,290/x
3. Step 3: Cross multiply
   1,074.50x = 2,290 × 2,290
4. Step 4: Simplify right side
   1,074.50x = 5,244,100
5. Step 5: Solve for x
   x = 5,244,100/1,074.50
6. Step 6: Final answer
   x = 4,880.50