Finding the Third Proportional to 4,029,574 and 8,708,684

Step by Step Solution

1. Step 1: Write the proportion equation
   4,029,574 : 8,708,684 = 8,708,684 : x
2. Step 2: Convert to fraction form
   4,029,574/8,708,684 = 8,708,684/x
3. Step 3: Cross multiply
   4,029,574x = 8,708,684 × 8,708,684
4. Step 4: Simplify right side
   4,029,574x = 75,841,177,011,856
5. Step 5: Solve for x
   x = 75,841,177,011,856/4,029,574
6. Step 6: Final answer
   x = 18,821,140.15