Finding the Third Proportional to 4,486,642 and 9,785,308

Step by Step Solution

1. Step 1: Write the proportion equation
   4,486,642 : 9,785,308 = 9,785,308 : x
2. Step 2: Convert to fraction form
   4,486,642/9,785,308 = 9,785,308/x
3. Step 3: Cross multiply
   4,486,642x = 9,785,308 × 9,785,308
4. Step 4: Simplify right side
   4,486,642x = 95,752,252,654,864
5. Step 5: Solve for x
   x = 95,752,252,654,864/4,486,642
6. Step 6: Final answer
   x = 21,341,629.81