Finding the Third Proportional to 743.06 and 1,620.56

Step by Step Solution

1. Step 1: Write the proportion equation
   743.06 : 1,620.56 = 1,620.56 : x
2. Step 2: Convert to fraction form
   743.06/1,620.56 = 1,620.56/x
3. Step 3: Cross multiply
   743.06x = 1,620.56 × 1,620.56
4. Step 4: Simplify right side
   743.06x = 2,626,222.82
5. Step 5: Solve for x
   x = 2,626,222.82/743.06
6. Step 6: Final answer
   x = 3,534.32