Finding the Third Proportional to 6,178,574 and 12,786,772

Step by Step Solution

1. Step 1: Write the proportion equation
   6,178,574 : 12,786,772 = 12,786,772 : x
2. Step 2: Convert to fraction form
   6,178,574/12,786,772 = 12,786,772/x
3. Step 3: Cross multiply
   6,178,574x = 12,786,772 × 12,786,772
4. Step 4: Simplify right side
   6,178,574x = 163,501,538,179,984
5. Step 5: Solve for x
   x = 163,501,538,179,984/6,178,574
6. Step 6: Final answer
   x = 26,462,665.69