Finding the Third Proportional to 10,434 and 21,237

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434 : 21,237 = 21,237 : x
2. Step 2: Convert to fraction form
   10,434/21,237 = 21,237/x
3. Step 3: Cross multiply
   10,434x = 21,237 × 21,237
4. Step 4: Simplify right side
   10,434x = 451,010,169
5. Step 5: Solve for x
   x = 451,010,169/10,434
6. Step 6: Final answer
   x = 43,225.05