Finding the Third Proportional to 1,366.03 and 2,161.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.03 : 2,161.69 = 2,161.69 : x
2. Step 2: Convert to fraction form
   1,366.03/2,161.69 = 2,161.69/x
3. Step 3: Cross multiply
   1,366.03x = 2,161.69 × 2,161.69
4. Step 4: Simplify right side
   1,366.03x = 4,672,892.85
5. Step 5: Solve for x
   x = 4,672,892.85/1,366.03
6. Step 6: Final answer
   x = 3,420.78