Finding the Third Proportional to 669,465 and 1,393,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   669,465 : 1,393,078.50 = 1,393,078.50 : x
2. Step 2: Convert to fraction form
   669,465/1,393,078.50 = 1,393,078.50/x
3. Step 3: Cross multiply
   669,465x = 1,393,078.50 × 1,393,078.50
4. Step 4: Simplify right side
   669,465x = 1,940,667,707,162.25
5. Step 5: Solve for x
   x = 1,940,667,707,162.25/669,465
6. Step 6: Final answer
   x = 2,898,833.71