Finding the Third Proportional to 621,376 and 1,359,048

Step by Step Solution

1. Step 1: Write the proportion equation
   621,376 : 1,359,048 = 1,359,048 : x
2. Step 2: Convert to fraction form
   621,376/1,359,048 = 1,359,048/x
3. Step 3: Cross multiply
   621,376x = 1,359,048 × 1,359,048
4. Step 4: Simplify right side
   621,376x = 1,847,011,466,304
5. Step 5: Solve for x
   x = 1,847,011,466,304/621,376
6. Step 6: Final answer
   x = 2,972,453.82