Finding the Third Proportional to 3,139,904 and 4,980,072

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139,904 : 4,980,072 = 4,980,072 : x
2. Step 2: Convert to fraction form
   3,139,904/4,980,072 = 4,980,072/x
3. Step 3: Cross multiply
   3,139,904x = 4,980,072 × 4,980,072
4. Step 4: Simplify right side
   3,139,904x = 24,801,117,125,184
5. Step 5: Solve for x
   x = 24,801,117,125,184/3,139,904
6. Step 6: Final answer
   x = 7,898,686.43