Finding the Third Proportional to 641,986 and 1,518,224

Step by Step Solution

1. Step 1: Write the proportion equation
   641,986 : 1,518,224 = 1,518,224 : x
2. Step 2: Convert to fraction form
   641,986/1,518,224 = 1,518,224/x
3. Step 3: Cross multiply
   641,986x = 1,518,224 × 1,518,224
4. Step 4: Simplify right side
   641,986x = 2,305,004,114,176
5. Step 5: Solve for x
   x = 2,305,004,114,176/641,986
6. Step 6: Final answer
   x = 3,590,427.38