Finding the Third Proportional to 9,890 and 21,535

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890 : 21,535 = 21,535 : x
2. Step 2: Convert to fraction form
   9,890/21,535 = 21,535/x
3. Step 3: Cross multiply
   9,890x = 21,535 × 21,535
4. Step 4: Simplify right side
   9,890x = 463,756,225
5. Step 5: Solve for x
   x = 463,756,225/9,890
6. Step 6: Final answer
   x = 46,891.43