Finding the Third Proportional to 1,690 and 2,274.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690 : 2,274.50 = 2,274.50 : x
2. Step 2: Convert to fraction form
   1,690/2,274.50 = 2,274.50/x
3. Step 3: Cross multiply
   1,690x = 2,274.50 × 2,274.50
4. Step 4: Simplify right side
   1,690x = 5,173,350.25
5. Step 5: Solve for x
   x = 5,173,350.25/1,690
6. Step 6: Final answer
   x = 3,061.15