Finding the Third Proportional to 1,055.53 and 2,156.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.53 : 2,156.20 = 2,156.20 : x
2. Step 2: Convert to fraction form
   1,055.53/2,156.20 = 2,156.20/x
3. Step 3: Cross multiply
   1,055.53x = 2,156.20 × 2,156.20
4. Step 4: Simplify right side
   1,055.53x = 4,649,211.92
5. Step 5: Solve for x
   x = 4,649,211.92/1,055.53
6. Step 6: Final answer
   x = 4,404.62