Finding the Third Proportional to 639,513 and 1,367,644.50

Step by Step Solution

1. Step 1: Write the proportion equation
   639,513 : 1,367,644.50 = 1,367,644.50 : x
2. Step 2: Convert to fraction form
   639,513/1,367,644.50 = 1,367,644.50/x
3. Step 3: Cross multiply
   639,513x = 1,367,644.50 × 1,367,644.50
4. Step 4: Simplify right side
   639,513x = 1,870,451,478,380.25
5. Step 5: Solve for x
   x = 1,870,451,478,380.25/639,513
6. Step 6: Final answer
   x = 2,924,806.03