Finding the Third Proportional to 621 and 1,436.06

Step by Step Solution

1. Step 1: Write the proportion equation
   621 : 1,436.06 = 1,436.06 : x
2. Step 2: Convert to fraction form
   621/1,436.06 = 1,436.06/x
3. Step 3: Cross multiply
   621x = 1,436.06 × 1,436.06
4. Step 4: Simplify right side
   621x = 2,062,275.50
5. Step 5: Solve for x
   x = 2,062,275.50/621
6. Step 6: Final answer
   x = 3,320.89