Finding the Third Proportional to 362,745 and 777,978

Step by Step Solution

1. Step 1: Write the proportion equation
   362,745 : 777,978 = 777,978 : x
2. Step 2: Convert to fraction form
   362,745/777,978 = 777,978/x
3. Step 3: Cross multiply
   362,745x = 777,978 × 777,978
4. Step 4: Simplify right side
   362,745x = 605,249,768,484
5. Step 5: Solve for x
   x = 605,249,768,484/362,745
6. Step 6: Final answer
   x = 1,668,526.84