Finding the Third Proportional to 6,978,760 and 10,426,310

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978,760 : 10,426,310 = 10,426,310 : x
2. Step 2: Convert to fraction form
   6,978,760/10,426,310 = 10,426,310/x
3. Step 3: Cross multiply
   6,978,760x = 10,426,310 × 10,426,310
4. Step 4: Simplify right side
   6,978,760x = 108,707,940,216,100
5. Step 5: Solve for x
   x = 108,707,940,216,100/6,978,760
6. Step 6: Final answer
   x = 15,576,970.72