Finding the Third Proportional to 561.94 and 1,209.30

Step by Step Solution

1. Step 1: Write the proportion equation
   561.94 : 1,209.30 = 1,209.30 : x
2. Step 2: Convert to fraction form
   561.94/1,209.30 = 1,209.30/x
3. Step 3: Cross multiply
   561.94x = 1,209.30 × 1,209.30
4. Step 4: Simplify right side
   561.94x = 1,462,417.83
5. Step 5: Solve for x
   x = 1,462,417.83/561.94
6. Step 6: Final answer
   x = 2,602.46