Finding the Third Proportional to 10,187 and 21,008

Step by Step Solution

1. Step 1: Write the proportion equation
   10,187 : 21,008 = 21,008 : x
2. Step 2: Convert to fraction form
   10,187/21,008 = 21,008/x
3. Step 3: Cross multiply
   10,187x = 21,008 × 21,008
4. Step 4: Simplify right side
   10,187x = 441,336,064
5. Step 5: Solve for x
   x = 441,336,064/10,187
6. Step 6: Final answer
   x = 43,323.46