Finding the Third Proportional to 10,158,378 and 21,694,446

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158,378 : 21,694,446 = 21,694,446 : x
2. Step 2: Convert to fraction form
   10,158,378/21,694,446 = 21,694,446/x
3. Step 3: Cross multiply
   10,158,378x = 21,694,446 × 21,694,446
4. Step 4: Simplify right side
   10,158,378x = 470,648,987,246,916
5. Step 5: Solve for x
   x = 470,648,987,246,916/10,158,378
6. Step 6: Final answer
   x = 46,331,115.78