Finding the Third Proportional to 3,857,262 and 8,400,264

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857,262 : 8,400,264 = 8,400,264 : x
2. Step 2: Convert to fraction form
   3,857,262/8,400,264 = 8,400,264/x
3. Step 3: Cross multiply
   3,857,262x = 8,400,264 × 8,400,264
4. Step 4: Simplify right side
   3,857,262x = 70,564,435,269,696
5. Step 5: Solve for x
   x = 70,564,435,269,696/3,857,262
6. Step 6: Final answer
   x = 18,293,918.14