Finding the Third Proportional to 4,217,648 and 8,734,368

Step by Step Solution

1. Step 1: Write the proportion equation
   4,217,648 : 8,734,368 = 8,734,368 : x
2. Step 2: Convert to fraction form
   4,217,648/8,734,368 = 8,734,368/x
3. Step 3: Cross multiply
   4,217,648x = 8,734,368 × 8,734,368
4. Step 4: Simplify right side
   4,217,648x = 76,289,184,359,424
5. Step 5: Solve for x
   x = 76,289,184,359,424/4,217,648
6. Step 6: Final answer
   x = 18,088,087.09