Finding the Third Proportional to 21,992.63 and 51,865.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,992.63 : 51,865.31 = 51,865.31 : x
2. Step 2: Convert to fraction form
   21,992.63/51,865.31 = 51,865.31/x
3. Step 3: Cross multiply
   21,992.63x = 51,865.31 × 51,865.31
4. Step 4: Simplify right side
   21,992.63x = 2,690,010,640.72
5. Step 5: Solve for x
   x = 2,690,010,640.72/21,992.63
6. Step 6: Final answer
   x = 122,314.21