Finding the Third Proportional to 3,493,704 and 7,639,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,493,704 : 7,639,128 = 7,639,128 : x
2. Step 2: Convert to fraction form
   3,493,704/7,639,128 = 7,639,128/x
3. Step 3: Cross multiply
   3,493,704x = 7,639,128 × 7,639,128
4. Step 4: Simplify right side
   3,493,704x = 58,356,276,600,384
5. Step 5: Solve for x
   x = 58,356,276,600,384/3,493,704
6. Step 6: Final answer
   x = 16,703,268.68