Finding the Third Proportional to 11,045.25 and 21,543.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,045.25 : 21,543.75 = 21,543.75 : x
2. Step 2: Convert to fraction form
   11,045.25/21,543.75 = 21,543.75/x
3. Step 3: Cross multiply
   11,045.25x = 21,543.75 × 21,543.75
4. Step 4: Simplify right side
   11,045.25x = 464,133,164.06
5. Step 5: Solve for x
   x = 464,133,164.06/11,045.25
6. Step 6: Final answer
   x = 42,021.06