Finding the Third Proportional to 365,019 and 780,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   365,019 : 780,481.50 = 780,481.50 : x
2. Step 2: Convert to fraction form
   365,019/780,481.50 = 780,481.50/x
3. Step 3: Cross multiply
   365,019x = 780,481.50 × 780,481.50
4. Step 4: Simplify right side
   365,019x = 609,151,371,842.25
5. Step 5: Solve for x
   x = 609,151,371,842.25/365,019
6. Step 6: Final answer
   x = 1,668,821.00