Finding the Third Proportional to 9,902.25 and 21,017.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.25 : 21,017.81 = 21,017.81 : x
2. Step 2: Convert to fraction form
   9,902.25/21,017.81 = 21,017.81/x
3. Step 3: Cross multiply
   9,902.25x = 21,017.81 × 21,017.81
4. Step 4: Simplify right side
   9,902.25x = 441,748,442.29
5. Step 5: Solve for x
   x = 441,748,442.29/9,902.25
6. Step 6: Final answer
   x = 44,610.92