Finding the Third Proportional to 561.94 and 1,405.69

Step by Step Solution

1. Step 1: Write the proportion equation
   561.94 : 1,405.69 = 1,405.69 : x
2. Step 2: Convert to fraction form
   561.94/1,405.69 = 1,405.69/x
3. Step 3: Cross multiply
   561.94x = 1,405.69 × 1,405.69
4. Step 4: Simplify right side
   561.94x = 1,975,957.35
5. Step 5: Solve for x
   x = 1,975,957.35/561.94
6. Step 6: Final answer
   x = 3,516.33