Finding the Third Proportional to 4,128,780 and 9,714,192

Step by Step Solution

1. Step 1: Write the proportion equation
   4,128,780 : 9,714,192 = 9,714,192 : x
2. Step 2: Convert to fraction form
   4,128,780/9,714,192 = 9,714,192/x
3. Step 3: Cross multiply
   4,128,780x = 9,714,192 × 9,714,192
4. Step 4: Simplify right side
   4,128,780x = 94,365,526,212,864
5. Step 5: Solve for x
   x = 94,365,526,212,864/4,128,780
6. Step 6: Final answer
   x = 22,855,547.21