Finding the Third Proportional to 1,286,980 and 1,958,142

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,980 : 1,958,142 = 1,958,142 : x
2. Step 2: Convert to fraction form
   1,286,980/1,958,142 = 1,958,142/x
3. Step 3: Cross multiply
   1,286,980x = 1,958,142 × 1,958,142
4. Step 4: Simplify right side
   1,286,980x = 3,834,320,092,164
5. Step 5: Solve for x
   x = 3,834,320,092,164/1,286,980
6. Step 6: Final answer
   x = 2,979,315.99