Finding the Third Proportional to 1,073.50 and 2,215.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.50 : 2,215.75 = 2,215.75 : x
2. Step 2: Convert to fraction form
   1,073.50/2,215.75 = 2,215.75/x
3. Step 3: Cross multiply
   1,073.50x = 2,215.75 × 2,215.75
4. Step 4: Simplify right side
   1,073.50x = 4,909,548.06
5. Step 5: Solve for x
   x = 4,909,548.06/1,073.50
6. Step 6: Final answer
   x = 4,573.40