Finding the Third Proportional to 9,810 and 21,284

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810 : 21,284 = 21,284 : x
2. Step 2: Convert to fraction form
   9,810/21,284 = 21,284/x
3. Step 3: Cross multiply
   9,810x = 21,284 × 21,284
4. Step 4: Simplify right side
   9,810x = 453,008,656
5. Step 5: Solve for x
   x = 453,008,656/9,810
6. Step 6: Final answer
   x = 46,178.25