Finding the Third Proportional to 9,724,985 and 21,162,418

Step by Step Solution

1. Step 1: Write the proportion equation
   9,724,985 : 21,162,418 = 21,162,418 : x
2. Step 2: Convert to fraction form
   9,724,985/21,162,418 = 21,162,418/x
3. Step 3: Cross multiply
   9,724,985x = 21,162,418 × 21,162,418
4. Step 4: Simplify right side
   9,724,985x = 447,847,935,606,724
5. Step 5: Solve for x
   x = 447,847,935,606,724/9,724,985
6. Step 6: Final answer
   x = 46,051,272.64