Finding the Third Proportional to 3,651,666 and 7,880,688

Step by Step Solution

1. Step 1: Write the proportion equation
   3,651,666 : 7,880,688 = 7,880,688 : x
2. Step 2: Convert to fraction form
   3,651,666/7,880,688 = 7,880,688/x
3. Step 3: Cross multiply
   3,651,666x = 7,880,688 × 7,880,688
4. Step 4: Simplify right side
   3,651,666x = 62,105,243,353,344
5. Step 5: Solve for x
   x = 62,105,243,353,344/3,651,666
6. Step 6: Final answer
   x = 17,007,372.35