Finding the Third Proportional to 1,223.07 and 3,307.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.07 : 3,307.55 = 3,307.55 : x
2. Step 2: Convert to fraction form
   1,223.07/3,307.55 = 3,307.55/x
3. Step 3: Cross multiply
   1,223.07x = 3,307.55 × 3,307.55
4. Step 4: Simplify right side
   1,223.07x = 10,939,905.09
5. Step 5: Solve for x
   x = 10,939,905.09/1,223.07
6. Step 6: Final answer
   x = 8,944.64