Finding the Third Proportional to 1,678,274 and 2,581,123

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,274 : 2,581,123 = 2,581,123 : x
2. Step 2: Convert to fraction form
   1,678,274/2,581,123 = 2,581,123/x
3. Step 3: Cross multiply
   1,678,274x = 2,581,123 × 2,581,123
4. Step 4: Simplify right side
   1,678,274x = 6,662,195,941,129
5. Step 5: Solve for x
   x = 6,662,195,941,129/1,678,274
6. Step 6: Final answer
   x = 3,969,671.19