Finding the Third Proportional to 2,145.75 and 3,069

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.75 : 3,069 = 3,069 : x
2. Step 2: Convert to fraction form
   2,145.75/3,069 = 3,069/x
3. Step 3: Cross multiply
   2,145.75x = 3,069 × 3,069
4. Step 4: Simplify right side
   2,145.75x = 9,418,761
5. Step 5: Solve for x
   x = 9,418,761/2,145.75
6. Step 6: Final answer
   x = 4,389.50