Finding the Third Proportional to 2,211.47 and 3,315.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.47 : 3,315.94 = 3,315.94 : x
2. Step 2: Convert to fraction form
   2,211.47/3,315.94 = 3,315.94/x
3. Step 3: Cross multiply
   2,211.47x = 3,315.94 × 3,315.94
4. Step 4: Simplify right side
   2,211.47x = 10,995,441.50
5. Step 5: Solve for x
   x = 10,995,441.50/2,211.47
6. Step 6: Final answer
   x = 4,972.01