Finding the Third Proportional to 1,544.50 and 3,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.50 : 3,390.50 = 3,390.50 : x
2. Step 2: Convert to fraction form
   1,544.50/3,390.50 = 3,390.50/x
3. Step 3: Cross multiply
   1,544.50x = 3,390.50 × 3,390.50
4. Step 4: Simplify right side
   1,544.50x = 11,495,490.25
5. Step 5: Solve for x
   x = 11,495,490.25/1,544.50
6. Step 6: Final answer
   x = 7,442.86