Finding the Third Proportional to 297,711 and 648,951.75

Step by Step Solution

1. Step 1: Write the proportion equation
   297,711 : 648,951.75 = 648,951.75 : x
2. Step 2: Convert to fraction form
   297,711/648,951.75 = 648,951.75/x
3. Step 3: Cross multiply
   297,711x = 648,951.75 × 648,951.75
4. Step 4: Simplify right side
   297,711x = 421,138,373,828.06
5. Step 5: Solve for x
   x = 421,138,373,828.06/297,711
6. Step 6: Final answer
   x = 1,414,587.88