Finding the Third Proportional to 1,355 and 1,980.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355 : 1,980.88 = 1,980.88 : x
2. Step 2: Convert to fraction form
   1,355/1,980.88 = 1,980.88/x
3. Step 3: Cross multiply
   1,355x = 1,980.88 × 1,980.88
4. Step 4: Simplify right side
   1,355x = 3,923,865.77
5. Step 5: Solve for x
   x = 3,923,865.77/1,355
6. Step 6: Final answer
   x = 2,895.84