Finding the Third Proportional to 1,555.88 and 2,187.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.88 : 2,187.56 = 2,187.56 : x
2. Step 2: Convert to fraction form
   1,555.88/2,187.56 = 2,187.56/x
3. Step 3: Cross multiply
   1,555.88x = 2,187.56 × 2,187.56
4. Step 4: Simplify right side
   1,555.88x = 4,785,429.69
5. Step 5: Solve for x
   x = 4,785,429.69/1,555.88
6. Step 6: Final answer
   x = 3,075.72