Finding the Third Proportional to 1,408 and 2,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408 : 2,100.50 = 2,100.50 : x
2. Step 2: Convert to fraction form
   1,408/2,100.50 = 2,100.50/x
3. Step 3: Cross multiply
   1,408x = 2,100.50 × 2,100.50
4. Step 4: Simplify right side
   1,408x = 4,412,100.25
5. Step 5: Solve for x
   x = 4,412,100.25/1,408
6. Step 6: Final answer
   x = 3,133.59