Finding the Third Proportional to 348,843 and 756,978

Step by Step Solution

1. Step 1: Write the proportion equation
   348,843 : 756,978 = 756,978 : x
2. Step 2: Convert to fraction form
   348,843/756,978 = 756,978/x
3. Step 3: Cross multiply
   348,843x = 756,978 × 756,978
4. Step 4: Simplify right side
   348,843x = 573,015,692,484
5. Step 5: Solve for x
   x = 573,015,692,484/348,843
6. Step 6: Final answer
   x = 1,642,617.72