Finding the Third Proportional to 9,479,886 and 20,398,404

Step by Step Solution

1. Step 1: Write the proportion equation
   9,479,886 : 20,398,404 = 20,398,404 : x
2. Step 2: Convert to fraction form
   9,479,886/20,398,404 = 20,398,404/x
3. Step 3: Cross multiply
   9,479,886x = 20,398,404 × 20,398,404
4. Step 4: Simplify right side
   9,479,886x = 416,094,885,747,216
5. Step 5: Solve for x
   x = 416,094,885,747,216/9,479,886
6. Step 6: Final answer
   x = 43,892,393.41