Finding the Third Proportional to 2,388.66 and 3,209.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.66 : 3,209.63 = 3,209.63 : x
2. Step 2: Convert to fraction form
   2,388.66/3,209.63 = 3,209.63/x
3. Step 3: Cross multiply
   2,388.66x = 3,209.63 × 3,209.63
4. Step 4: Simplify right side
   2,388.66x = 10,301,692.64
5. Step 5: Solve for x
   x = 10,301,692.64/2,388.66
6. Step 6: Final answer
   x = 4,312.76