Finding the Third Proportional to 3,651,667 and 7,880,690

Step by Step Solution

1. Step 1: Write the proportion equation
   3,651,667 : 7,880,690 = 7,880,690 : x
2. Step 2: Convert to fraction form
   3,651,667/7,880,690 = 7,880,690/x
3. Step 3: Cross multiply
   3,651,667x = 7,880,690 × 7,880,690
4. Step 4: Simplify right side
   3,651,667x = 62,105,274,876,100
5. Step 5: Solve for x
   x = 62,105,274,876,100/3,651,667
6. Step 6: Final answer
   x = 17,007,376.32