Finding the Third Proportional to 9,974,786 and 21,816,132

Step by Step Solution

1. Step 1: Write the proportion equation
   9,974,786 : 21,816,132 = 21,816,132 : x
2. Step 2: Convert to fraction form
   9,974,786/21,816,132 = 21,816,132/x
3. Step 3: Cross multiply
   9,974,786x = 21,816,132 × 21,816,132
4. Step 4: Simplify right side
   9,974,786x = 475,943,615,441,424
5. Step 5: Solve for x
   x = 475,943,615,441,424/9,974,786
6. Step 6: Final answer
   x = 47,714,669.31