Finding the Third Proportional to 21,186 and 30,786

Step by Step Solution

1. Step 1: Write the proportion equation
   21,186 : 30,786 = 30,786 : x
2. Step 2: Convert to fraction form
   21,186/30,786 = 30,786/x
3. Step 3: Cross multiply
   21,186x = 30,786 × 30,786
4. Step 4: Simplify right side
   21,186x = 947,777,796
5. Step 5: Solve for x
   x = 947,777,796/21,186
6. Step 6: Final answer
   x = 44,736.04