Finding the Third Proportional to 3,678,912 and 8,042,112

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678,912 : 8,042,112 = 8,042,112 : x
2. Step 2: Convert to fraction form
   3,678,912/8,042,112 = 8,042,112/x
3. Step 3: Cross multiply
   3,678,912x = 8,042,112 × 8,042,112
4. Step 4: Simplify right side
   3,678,912x = 64,675,565,420,544
5. Step 5: Solve for x
   x = 64,675,565,420,544/3,678,912
6. Step 6: Final answer
   x = 17,580,079.50