Finding the Third Proportional to 4,659,576 and 9,966,996

Step by Step Solution

1. Step 1: Write the proportion equation
   4,659,576 : 9,966,996 = 9,966,996 : x
2. Step 2: Convert to fraction form
   4,659,576/9,966,996 = 9,966,996/x
3. Step 3: Cross multiply
   4,659,576x = 9,966,996 × 9,966,996
4. Step 4: Simplify right side
   4,659,576x = 99,341,009,264,016
5. Step 5: Solve for x
   x = 99,341,009,264,016/4,659,576
6. Step 6: Final answer
   x = 21,319,752.97