Finding the Third Proportional to 297,320 and 619,264

Step by Step Solution

1. Step 1: Write the proportion equation
   297,320 : 619,264 = 619,264 : x
2. Step 2: Convert to fraction form
   297,320/619,264 = 619,264/x
3. Step 3: Cross multiply
   297,320x = 619,264 × 619,264
4. Step 4: Simplify right side
   297,320x = 383,487,901,696
5. Step 5: Solve for x
   x = 383,487,901,696/297,320
6. Step 6: Final answer
   x = 1,289,815.36