Finding the Third Proportional to 774,978 and 1,642,147

Step by Step Solution

1. Step 1: Write the proportion equation
   774,978 : 1,642,147 = 1,642,147 : x
2. Step 2: Convert to fraction form
   774,978/1,642,147 = 1,642,147/x
3. Step 3: Cross multiply
   774,978x = 1,642,147 × 1,642,147
4. Step 4: Simplify right side
   774,978x = 2,696,646,769,609
5. Step 5: Solve for x
   x = 2,696,646,769,609/774,978
6. Step 6: Final answer
   x = 3,479,643.00