Finding the Third Proportional to 359,502 and 789,678

Step by Step Solution

1. Step 1: Write the proportion equation
   359,502 : 789,678 = 789,678 : x
2. Step 2: Convert to fraction form
   359,502/789,678 = 789,678/x
3. Step 3: Cross multiply
   359,502x = 789,678 × 789,678
4. Step 4: Simplify right side
   359,502x = 623,591,343,684
5. Step 5: Solve for x
   x = 623,591,343,684/359,502
6. Step 6: Final answer
   x = 1,734,597.70