Finding the Third Proportional to 3,651,664 and 7,880,684

Step by Step Solution

1. Step 1: Write the proportion equation
   3,651,664 : 7,880,684 = 7,880,684 : x
2. Step 2: Convert to fraction form
   3,651,664/7,880,684 = 7,880,684/x
3. Step 3: Cross multiply
   3,651,664x = 7,880,684 × 7,880,684
4. Step 4: Simplify right side
   3,651,664x = 62,105,180,307,856
5. Step 5: Solve for x
   x = 62,105,180,307,856/3,651,664
6. Step 6: Final answer
   x = 17,007,364.40