Finding the Third Proportional to 4,638,655 and 7,077,959

Step by Step Solution

1. Step 1: Write the proportion equation
   4,638,655 : 7,077,959 = 7,077,959 : x
2. Step 2: Convert to fraction form
   4,638,655/7,077,959 = 7,077,959/x
3. Step 3: Cross multiply
   4,638,655x = 7,077,959 × 7,077,959
4. Step 4: Simplify right side
   4,638,655x = 50,097,503,605,681
5. Step 5: Solve for x
   x = 50,097,503,605,681/4,638,655
6. Step 6: Final answer
   x = 10,800,006.38