Finding the Third Proportional to 4,486,638 and 9,785,300

Step by Step Solution

1. Step 1: Write the proportion equation
   4,486,638 : 9,785,300 = 9,785,300 : x
2. Step 2: Convert to fraction form
   4,486,638/9,785,300 = 9,785,300/x
3. Step 3: Cross multiply
   4,486,638x = 9,785,300 × 9,785,300
4. Step 4: Simplify right side
   4,486,638x = 95,752,096,090,000
5. Step 5: Solve for x
   x = 95,752,096,090,000/4,486,638
6. Step 6: Final answer
   x = 21,341,613.94