Finding the Third Proportional to 10,426,315 and 21,577,621

Step by Step Solution

1. Step 1: Write the proportion equation
   10,426,315 : 21,577,621 = 21,577,621 : x
2. Step 2: Convert to fraction form
   10,426,315/21,577,621 = 21,577,621/x
3. Step 3: Cross multiply
   10,426,315x = 21,577,621 × 21,577,621
4. Step 4: Simplify right side
   10,426,315x = 465,593,728,019,641
5. Step 5: Solve for x
   x = 465,593,728,019,641/10,426,315
6. Step 6: Final answer
   x = 44,655,636.05