Finding the Third Proportional to 1,089.88 and 1,667.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.88 : 1,667.13 = 1,667.13 : x
2. Step 2: Convert to fraction form
   1,089.88/1,667.13 = 1,667.13/x
3. Step 3: Cross multiply
   1,089.88x = 1,667.13 × 1,667.13
4. Step 4: Simplify right side
   1,089.88x = 2,779,305.77
5. Step 5: Solve for x
   x = 2,779,305.77/1,089.88
6. Step 6: Final answer
   x = 2,550.11