Finding the Third Proportional to 1,621.69 and 3,507.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.69 : 3,507.47 = 3,507.47 : x
2. Step 2: Convert to fraction form
   1,621.69/3,507.47 = 3,507.47/x
3. Step 3: Cross multiply
   1,621.69x = 3,507.47 × 3,507.47
4. Step 4: Simplify right side
   1,621.69x = 12,302,337.03
5. Step 5: Solve for x
   x = 12,302,337.03/1,621.69
6. Step 6: Final answer
   x = 7,586.13