Finding the Third Proportional to 16,186.50 and 21,868.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,186.50 : 21,868.31 = 21,868.31 : x
2. Step 2: Convert to fraction form
   16,186.50/21,868.31 = 21,868.31/x
3. Step 3: Cross multiply
   16,186.50x = 21,868.31 × 21,868.31
4. Step 4: Simplify right side
   16,186.50x = 478,223,091.60
5. Step 5: Solve for x
   x = 478,223,091.60/16,186.50
6. Step 6: Final answer
   x = 29,544.56