Finding the Third Proportional to 1,358 and 3,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358 : 3,144.50 = 3,144.50 : x
2. Step 2: Convert to fraction form
   1,358/3,144.50 = 3,144.50/x
3. Step 3: Cross multiply
   1,358x = 3,144.50 × 3,144.50
4. Step 4: Simplify right side
   1,358x = 9,887,880.25
5. Step 5: Solve for x
   x = 9,887,880.25/1,358
6. Step 6: Final answer
   x = 7,281.21