Finding the Third Proportional to 4,200,896 and 8,555,880

Step by Step Solution

1. Step 1: Write the proportion equation
   4,200,896 : 8,555,880 = 8,555,880 : x
2. Step 2: Convert to fraction form
   4,200,896/8,555,880 = 8,555,880/x
3. Step 3: Cross multiply
   4,200,896x = 8,555,880 × 8,555,880
4. Step 4: Simplify right side
   4,200,896x = 73,203,082,574,400
5. Step 5: Solve for x
   x = 73,203,082,574,400/4,200,896
6. Step 6: Final answer
   x = 17,425,587.92