Finding the Third Proportional to 3,118,689 and 4,665,339

Step by Step Solution

1. Step 1: Write the proportion equation
   3,118,689 : 4,665,339 = 4,665,339 : x
2. Step 2: Convert to fraction form
   3,118,689/4,665,339 = 4,665,339/x
3. Step 3: Cross multiply
   3,118,689x = 4,665,339 × 4,665,339
4. Step 4: Simplify right side
   3,118,689x = 21,765,387,984,921
5. Step 5: Solve for x
   x = 21,765,387,984,921/3,118,689
6. Step 6: Final answer
   x = 6,979,018.42