Finding the Third Proportional to 11,308.78 and 22,921.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,308.78 : 22,921.31 = 22,921.31 : x
2. Step 2: Convert to fraction form
   11,308.78/22,921.31 = 22,921.31/x
3. Step 3: Cross multiply
   11,308.78x = 22,921.31 × 22,921.31
4. Step 4: Simplify right side
   11,308.78x = 525,386,566.72
5. Step 5: Solve for x
   x = 525,386,566.72/11,308.78
6. Step 6: Final answer
   x = 46,458.28