Finding the Third Proportional to 3,840,086 and 8,403,340

Step by Step Solution

1. Step 1: Write the proportion equation
   3,840,086 : 8,403,340 = 8,403,340 : x
2. Step 2: Convert to fraction form
   3,840,086/8,403,340 = 8,403,340/x
3. Step 3: Cross multiply
   3,840,086x = 8,403,340 × 8,403,340
4. Step 4: Simplify right side
   3,840,086x = 70,616,123,155,600
5. Step 5: Solve for x
   x = 70,616,123,155,600/3,840,086
6. Step 6: Final answer
   x = 18,389,203.56