Finding the Third Proportional to 3,668,820 and 7,781,601

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668,820 : 7,781,601 = 7,781,601 : x
2. Step 2: Convert to fraction form
   3,668,820/7,781,601 = 7,781,601/x
3. Step 3: Cross multiply
   3,668,820x = 7,781,601 × 7,781,601
4. Step 4: Simplify right side
   3,668,820x = 60,553,314,123,201
5. Step 5: Solve for x
   x = 60,553,314,123,201/3,668,820
6. Step 6: Final answer
   x = 16,504,847.37