Finding the Third Proportional to 1,212.79 and 2,598.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212.79 : 2,598.54 = 2,598.54 : x
2. Step 2: Convert to fraction form
   1,212.79/2,598.54 = 2,598.54/x
3. Step 3: Cross multiply
   1,212.79x = 2,598.54 × 2,598.54
4. Step 4: Simplify right side
   1,212.79x = 6,752,405.26
5. Step 5: Solve for x
   x = 6,752,405.26/1,212.79
6. Step 6: Final answer
   x = 5,567.68