Finding the Third Proportional to 9,781,540 and 21,452,647

Step by Step Solution

1. Step 1: Write the proportion equation
   9,781,540 : 21,452,647 = 21,452,647 : x
2. Step 2: Convert to fraction form
   9,781,540/21,452,647 = 21,452,647/x
3. Step 3: Cross multiply
   9,781,540x = 21,452,647 × 21,452,647
4. Step 4: Simplify right side
   9,781,540x = 460,216,063,306,609
5. Step 5: Solve for x
   x = 460,216,063,306,609/9,781,540
6. Step 6: Final answer
   x = 47,049,448.58