Finding the Third Proportional to 1,027.50 and 2,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,027.50 : 2,215.50 = 2,215.50 : x
2. Step 2: Convert to fraction form
   1,027.50/2,215.50 = 2,215.50/x
3. Step 3: Cross multiply
   1,027.50x = 2,215.50 × 2,215.50
4. Step 4: Simplify right side
   1,027.50x = 4,908,440.25
5. Step 5: Solve for x
   x = 4,908,440.25/1,027.50
6. Step 6: Final answer
   x = 4,777.07