Finding the Third Proportional to 4,072,902 and 8,042,988

Step by Step Solution

1. Step 1: Write the proportion equation
   4,072,902 : 8,042,988 = 8,042,988 : x
2. Step 2: Convert to fraction form
   4,072,902/8,042,988 = 8,042,988/x
3. Step 3: Cross multiply
   4,072,902x = 8,042,988 × 8,042,988
4. Step 4: Simplify right side
   4,072,902x = 64,689,655,968,144
5. Step 5: Solve for x
   x = 64,689,655,968,144/4,072,902
6. Step 6: Final answer
   x = 15,882,939.48