Finding the Third Proportional to 9,857,106 and 21,572,406

Step by Step Solution

1. Step 1: Write the proportion equation
   9,857,106 : 21,572,406 = 21,572,406 : x
2. Step 2: Convert to fraction form
   9,857,106/21,572,406 = 21,572,406/x
3. Step 3: Cross multiply
   9,857,106x = 21,572,406 × 21,572,406
4. Step 4: Simplify right side
   9,857,106x = 465,368,700,628,836
5. Step 5: Solve for x
   x = 465,368,700,628,836/9,857,106
6. Step 6: Final answer
   x = 47,211,493.99