Finding the Third Proportional to 621,822 and 1,342,896

Step by Step Solution

1. Step 1: Write the proportion equation
   621,822 : 1,342,896 = 1,342,896 : x
2. Step 2: Convert to fraction form
   621,822/1,342,896 = 1,342,896/x
3. Step 3: Cross multiply
   621,822x = 1,342,896 × 1,342,896
4. Step 4: Simplify right side
   621,822x = 1,803,369,666,816
5. Step 5: Solve for x
   x = 1,803,369,666,816/621,822
6. Step 6: Final answer
   x = 2,900,138.09