Finding the Third Proportional to 3,858,798 and 8,403,324

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858,798 : 8,403,324 = 8,403,324 : x
2. Step 2: Convert to fraction form
   3,858,798/8,403,324 = 8,403,324/x
3. Step 3: Cross multiply
   3,858,798x = 8,403,324 × 8,403,324
4. Step 4: Simplify right side
   3,858,798x = 70,615,854,248,976
5. Step 5: Solve for x
   x = 70,615,854,248,976/3,858,798
6. Step 6: Final answer
   x = 18,299,961.35