Finding the Third Proportional to 1,347.50 and 2,142.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.50 : 2,142.75 = 2,142.75 : x
2. Step 2: Convert to fraction form
   1,347.50/2,142.75 = 2,142.75/x
3. Step 3: Cross multiply
   1,347.50x = 2,142.75 × 2,142.75
4. Step 4: Simplify right side
   1,347.50x = 4,591,377.56
5. Step 5: Solve for x
   x = 4,591,377.56/1,347.50
6. Step 6: Final answer
   x = 3,407.33