Finding the Third Proportional to 3,317,808 and 7,278,432

Step by Step Solution

1. Step 1: Write the proportion equation
   3,317,808 : 7,278,432 = 7,278,432 : x
2. Step 2: Convert to fraction form
   3,317,808/7,278,432 = 7,278,432/x
3. Step 3: Cross multiply
   3,317,808x = 7,278,432 × 7,278,432
4. Step 4: Simplify right side
   3,317,808x = 52,975,572,378,624
5. Step 5: Solve for x
   x = 52,975,572,378,624/3,317,808
6. Step 6: Final answer
   x = 15,967,039.80