Finding the Third Proportional to 4,201,860 and 6,518,616

Step by Step Solution

1. Step 1: Write the proportion equation
   4,201,860 : 6,518,616 = 6,518,616 : x
2. Step 2: Convert to fraction form
   4,201,860/6,518,616 = 6,518,616/x
3. Step 3: Cross multiply
   4,201,860x = 6,518,616 × 6,518,616
4. Step 4: Simplify right side
   4,201,860x = 42,492,354,555,456
5. Step 5: Solve for x
   x = 42,492,354,555,456/4,201,860
6. Step 6: Final answer
   x = 10,112,748.77