Finding the Third Proportional to 3,929,340 and 8,684,544

Step by Step Solution

1. Step 1: Write the proportion equation
   3,929,340 : 8,684,544 = 8,684,544 : x
2. Step 2: Convert to fraction form
   3,929,340/8,684,544 = 8,684,544/x
3. Step 3: Cross multiply
   3,929,340x = 8,684,544 × 8,684,544
4. Step 4: Simplify right side
   3,929,340x = 75,421,304,487,936
5. Step 5: Solve for x
   x = 75,421,304,487,936/3,929,340
6. Step 6: Final answer
   x = 19,194,395.11