Finding the Third Proportional to 3,945,513 and 8,480,652

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945,513 : 8,480,652 = 8,480,652 : x
2. Step 2: Convert to fraction form
   3,945,513/8,480,652 = 8,480,652/x
3. Step 3: Cross multiply
   3,945,513x = 8,480,652 × 8,480,652
4. Step 4: Simplify right side
   3,945,513x = 71,921,458,345,104
5. Step 5: Solve for x
   x = 71,921,458,345,104/3,945,513
6. Step 6: Final answer
   x = 18,228,670.99