Finding the Third Proportional to 4,638,660 and 7,077,966

Step by Step Solution

1. Step 1: Write the proportion equation
   4,638,660 : 7,077,966 = 7,077,966 : x
2. Step 2: Convert to fraction form
   4,638,660/7,077,966 = 7,077,966/x
3. Step 3: Cross multiply
   4,638,660x = 7,077,966 × 7,077,966
4. Step 4: Simplify right side
   4,638,660x = 50,097,602,697,156
5. Step 5: Solve for x
   x = 50,097,602,697,156/4,638,660
6. Step 6: Final answer
   x = 10,800,016.10