Finding the Third Proportional to 9,852,974 and 21,162,390

Step by Step Solution

1. Step 1: Write the proportion equation
   9,852,974 : 21,162,390 = 21,162,390 : x
2. Step 2: Convert to fraction form
   9,852,974/21,162,390 = 21,162,390/x
3. Step 3: Cross multiply
   9,852,974x = 21,162,390 × 21,162,390
4. Step 4: Simplify right side
   9,852,974x = 447,846,750,512,100
5. Step 5: Solve for x
   x = 447,846,750,512,100/9,852,974
6. Step 6: Final answer
   x = 45,452,951.62