Finding the Third Proportional to 1,621.69 and 2,508.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.69 : 2,508.56 = 2,508.56 : x
2. Step 2: Convert to fraction form
   1,621.69/2,508.56 = 2,508.56/x
3. Step 3: Cross multiply
   1,621.69x = 2,508.56 × 2,508.56
4. Step 4: Simplify right side
   1,621.69x = 6,292,885.82
5. Step 5: Solve for x
   x = 6,292,885.82/1,621.69
6. Step 6: Final answer
   x = 3,880.46