Finding the Third Proportional to 359,864 and 775,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,864 : 775,086.50 = 775,086.50 : x
2. Step 2: Convert to fraction form
   359,864/775,086.50 = 775,086.50/x
3. Step 3: Cross multiply
   359,864x = 775,086.50 × 775,086.50
4. Step 4: Simplify right side
   359,864x = 600,759,082,482.25
5. Step 5: Solve for x
   x = 600,759,082,482.25/359,864
6. Step 6: Final answer
   x = 1,669,405.89