Finding the Third Proportional to 621,582 and 877,361.25

Step by Step Solution

1. Step 1: Write the proportion equation
   621,582 : 877,361.25 = 877,361.25 : x
2. Step 2: Convert to fraction form
   621,582/877,361.25 = 877,361.25/x
3. Step 3: Cross multiply
   621,582x = 877,361.25 × 877,361.25
4. Step 4: Simplify right side
   621,582x = 769,762,763,001.56
5. Step 5: Solve for x
   x = 769,762,763,001.56/621,582
6. Step 6: Final answer
   x = 1,238,392.94