Finding the Third Proportional to 3,955,798 and 8,121,305

Step by Step Solution

1. Step 1: Write the proportion equation
   3,955,798 : 8,121,305 = 8,121,305 : x
2. Step 2: Convert to fraction form
   3,955,798/8,121,305 = 8,121,305/x
3. Step 3: Cross multiply
   3,955,798x = 8,121,305 × 8,121,305
4. Step 4: Simplify right side
   3,955,798x = 65,955,594,903,025
5. Step 5: Solve for x
   x = 65,955,594,903,025/3,955,798
6. Step 6: Final answer
   x = 16,673,145.32