Finding the Third Proportional to 4,991,104 and 10,218,710

Step by Step Solution

1. Step 1: Write the proportion equation
   4,991,104 : 10,218,710 = 10,218,710 : x
2. Step 2: Convert to fraction form
   4,991,104/10,218,710 = 10,218,710/x
3. Step 3: Cross multiply
   4,991,104x = 10,218,710 × 10,218,710
4. Step 4: Simplify right side
   4,991,104x = 104,422,034,064,100
5. Step 5: Solve for x
   x = 104,422,034,064,100/4,991,104
6. Step 6: Final answer
   x = 20,921,630.58