Finding the Third Proportional to 6,678,528 and 9,978,328

Step by Step Solution

1. Step 1: Write the proportion equation
   6,678,528 : 9,978,328 = 9,978,328 : x
2. Step 2: Convert to fraction form
   6,678,528/9,978,328 = 9,978,328/x
3. Step 3: Cross multiply
   6,678,528x = 9,978,328 × 9,978,328
4. Step 4: Simplify right side
   6,678,528x = 99,567,029,675,584
5. Step 5: Solve for x
   x = 99,567,029,675,584/6,678,528
6. Step 6: Final answer
   x = 14,908,529.20