Finding the Third Proportional to 3,317,810 and 7,278,436

Step by Step Solution

1. Step 1: Write the proportion equation
   3,317,810 : 7,278,436 = 7,278,436 : x
2. Step 2: Convert to fraction form
   3,317,810/7,278,436 = 7,278,436/x
3. Step 3: Cross multiply
   3,317,810x = 7,278,436 × 7,278,436
4. Step 4: Simplify right side
   3,317,810x = 52,975,630,606,096
5. Step 5: Solve for x
   x = 52,975,630,606,096/3,317,810
6. Step 6: Final answer
   x = 15,967,047.72