Finding the Third Proportional to 4,199,588 and 8,679,112

Step by Step Solution

1. Step 1: Write the proportion equation
   4,199,588 : 8,679,112 = 8,679,112 : x
2. Step 2: Convert to fraction form
   4,199,588/8,679,112 = 8,679,112/x
3. Step 3: Cross multiply
   4,199,588x = 8,679,112 × 8,679,112
4. Step 4: Simplify right side
   4,199,588x = 75,326,985,108,544
5. Step 5: Solve for x
   x = 75,326,985,108,544/4,199,588
6. Step 6: Final answer
   x = 17,936,755.96