Finding the Third Proportional to 663,984 and 1,440,558

Step by Step Solution

1. Step 1: Write the proportion equation
   663,984 : 1,440,558 = 1,440,558 : x
2. Step 2: Convert to fraction form
   663,984/1,440,558 = 1,440,558/x
3. Step 3: Cross multiply
   663,984x = 1,440,558 × 1,440,558
4. Step 4: Simplify right side
   663,984x = 2,075,207,351,364
5. Step 5: Solve for x
   x = 2,075,207,351,364/663,984
6. Step 6: Final answer
   x = 3,125,387.59