Finding the Third Proportional to 4,131,976 and 8,927,890

Step by Step Solution

1. Step 1: Write the proportion equation
   4,131,976 : 8,927,890 = 8,927,890 : x
2. Step 2: Convert to fraction form
   4,131,976/8,927,890 = 8,927,890/x
3. Step 3: Cross multiply
   4,131,976x = 8,927,890 × 8,927,890
4. Step 4: Simplify right side
   4,131,976x = 79,707,219,852,100
5. Step 5: Solve for x
   x = 79,707,219,852,100/4,131,976
6. Step 6: Final answer
   x = 19,290,339.50