Finding the Third Proportional to 3,927,270 and 8,641,859

Step by Step Solution

1. Step 1: Write the proportion equation
   3,927,270 : 8,641,859 = 8,641,859 : x
2. Step 2: Convert to fraction form
   3,927,270/8,641,859 = 8,641,859/x
3. Step 3: Cross multiply
   3,927,270x = 8,641,859 × 8,641,859
4. Step 4: Simplify right side
   3,927,270x = 74,681,726,975,881
5. Step 5: Solve for x
   x = 74,681,726,975,881/3,927,270
6. Step 6: Final answer
   x = 19,016,193.69