Finding the Third Proportional to 2,553.19 and 4,131.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.19 : 4,131.56 = 4,131.56 : x
2. Step 2: Convert to fraction form
   2,553.19/4,131.56 = 4,131.56/x
3. Step 3: Cross multiply
   2,553.19x = 4,131.56 × 4,131.56
4. Step 4: Simplify right side
   2,553.19x = 17,069,808.69
5. Step 5: Solve for x
   x = 17,069,808.69/2,553.19
6. Step 6: Final answer
   x = 6,685.69