Finding the Third Proportional to 3,668,877 and 5,558,720

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668,877 : 5,558,720 = 5,558,720 : x
2. Step 2: Convert to fraction form
   3,668,877/5,558,720 = 5,558,720/x
3. Step 3: Cross multiply
   3,668,877x = 5,558,720 × 5,558,720
4. Step 4: Simplify right side
   3,668,877x = 30,899,368,038,400
5. Step 5: Solve for x
   x = 30,899,368,038,400/3,668,877
6. Step 6: Final answer
   x = 8,422,023.43