Finding the Third Proportional to 21,816 and 40,894.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,816 : 40,894.88 = 40,894.88 : x
2. Step 2: Convert to fraction form
   21,816/40,894.88 = 40,894.88/x
3. Step 3: Cross multiply
   21,816x = 40,894.88 × 40,894.88
4. Step 4: Simplify right side
   21,816x = 1,672,390,801.27
5. Step 5: Solve for x
   x = 1,672,390,801.27/21,816
6. Step 6: Final answer
   x = 76,658.91