Finding the Third Proportional to 4,514,836 and 9,641,978

Step by Step Solution

1. Step 1: Write the proportion equation
   4,514,836 : 9,641,978 = 9,641,978 : x
2. Step 2: Convert to fraction form
   4,514,836/9,641,978 = 9,641,978/x
3. Step 3: Cross multiply
   4,514,836x = 9,641,978 × 9,641,978
4. Step 4: Simplify right side
   4,514,836x = 92,967,739,752,484
5. Step 5: Solve for x
   x = 92,967,739,752,484/4,514,836
6. Step 6: Final answer
   x = 20,591,609.47