Finding the Third Proportional to 3,521,018 and 7,420,316

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521,018 : 7,420,316 = 7,420,316 : x
2. Step 2: Convert to fraction form
   3,521,018/7,420,316 = 7,420,316/x
3. Step 3: Cross multiply
   3,521,018x = 7,420,316 × 7,420,316
4. Step 4: Simplify right side
   3,521,018x = 55,061,089,539,856
5. Step 5: Solve for x
   x = 55,061,089,539,856/3,521,018
6. Step 6: Final answer
   x = 15,637,832.45