Finding the Third Proportional to 1,445.50 and 3,215

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.50 : 3,215 = 3,215 : x
2. Step 2: Convert to fraction form
   1,445.50/3,215 = 3,215/x
3. Step 3: Cross multiply
   1,445.50x = 3,215 × 3,215
4. Step 4: Simplify right side
   1,445.50x = 10,336,225
5. Step 5: Solve for x
   x = 10,336,225/1,445.50
6. Step 6: Final answer
   x = 7,150.62