Finding the Third Proportional to 3,671,427 and 7,873,890

Step by Step Solution

1. Step 1: Write the proportion equation
   3,671,427 : 7,873,890 = 7,873,890 : x
2. Step 2: Convert to fraction form
   3,671,427/7,873,890 = 7,873,890/x
3. Step 3: Cross multiply
   3,671,427x = 7,873,890 × 7,873,890
4. Step 4: Simplify right side
   3,671,427x = 61,998,143,732,100
5. Step 5: Solve for x
   x = 61,998,143,732,100/3,671,427
6. Step 6: Final answer
   x = 16,886,661.16