Finding the Third Proportional to 21,805.88 and 40,876.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,805.88 : 40,876.31 = 40,876.31 : x
2. Step 2: Convert to fraction form
   21,805.88/40,876.31 = 40,876.31/x
3. Step 3: Cross multiply
   21,805.88x = 40,876.31 × 40,876.31
4. Step 4: Simplify right side
   21,805.88x = 1,670,872,923.60
5. Step 5: Solve for x
   x = 1,670,872,923.60/21,805.88
6. Step 6: Final answer
   x = 76,624.90