Finding the Third Proportional to 3,678,924 and 8,042,136

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678,924 : 8,042,136 = 8,042,136 : x
2. Step 2: Convert to fraction form
   3,678,924/8,042,136 = 8,042,136/x
3. Step 3: Cross multiply
   3,678,924x = 8,042,136 × 8,042,136
4. Step 4: Simplify right side
   3,678,924x = 64,675,951,442,496
5. Step 5: Solve for x
   x = 64,675,951,442,496/3,678,924
6. Step 6: Final answer
   x = 17,580,127.08