Finding the Third Proportional to 9,515 and 20,272

Step by Step Solution

1. Step 1: Write the proportion equation
   9,515 : 20,272 = 20,272 : x
2. Step 2: Convert to fraction form
   9,515/20,272 = 20,272/x
3. Step 3: Cross multiply
   9,515x = 20,272 × 20,272
4. Step 4: Simplify right side
   9,515x = 410,953,984
5. Step 5: Solve for x
   x = 410,953,984/9,515
6. Step 6: Final answer
   x = 43,190.12