Finding the Third Proportional to 3,861,216 and 5,077,512

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861,216 : 5,077,512 = 5,077,512 : x
2. Step 2: Convert to fraction form
   3,861,216/5,077,512 = 5,077,512/x
3. Step 3: Cross multiply
   3,861,216x = 5,077,512 × 5,077,512
4. Step 4: Simplify right side
   3,861,216x = 25,781,128,110,144
5. Step 5: Solve for x
   x = 25,781,128,110,144/3,861,216
6. Step 6: Final answer
   x = 6,676,945.32