Finding the Third Proportional to 2,554.69 and 5,572.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.69 : 5,572.31 = 5,572.31 : x
2. Step 2: Convert to fraction form
   2,554.69/5,572.31 = 5,572.31/x
3. Step 3: Cross multiply
   2,554.69x = 5,572.31 × 5,572.31
4. Step 4: Simplify right side
   2,554.69x = 31,050,666.60
5. Step 5: Solve for x
   x = 31,050,666.60/2,554.69
6. Step 6: Final answer
   x = 12,154.39