Finding the Third Proportional to 4,019,387 and 8,736,886

Step by Step Solution

1. Step 1: Write the proportion equation
   4,019,387 : 8,736,886 = 8,736,886 : x
2. Step 2: Convert to fraction form
   4,019,387/8,736,886 = 8,736,886/x
3. Step 3: Cross multiply
   4,019,387x = 8,736,886 × 8,736,886
4. Step 4: Simplify right side
   4,019,387x = 76,333,176,976,996
5. Step 5: Solve for x
   x = 76,333,176,976,996/4,019,387
6. Step 6: Final answer
   x = 18,991,248.41