Finding the Third Proportional to 9,881.50 and 21,455

Step by Step Solution

1. Step 1: Write the proportion equation
   9,881.50 : 21,455 = 21,455 : x
2. Step 2: Convert to fraction form
   9,881.50/21,455 = 21,455/x
3. Step 3: Cross multiply
   9,881.50x = 21,455 × 21,455
4. Step 4: Simplify right side
   9,881.50x = 460,317,025
5. Step 5: Solve for x
   x = 460,317,025/9,881.50
6. Step 6: Final answer
   x = 46,583.72