Finding the Third Proportional to 1,395.56 and 2,086.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.56 : 2,086.88 = 2,086.88 : x
2. Step 2: Convert to fraction form
   1,395.56/2,086.88 = 2,086.88/x
3. Step 3: Cross multiply
   1,395.56x = 2,086.88 × 2,086.88
4. Step 4: Simplify right side
   1,395.56x = 4,355,047.27
5. Step 5: Solve for x
   x = 4,355,047.27/1,395.56
6. Step 6: Final answer
   x = 3,120.64