Finding the Third Proportional to 725,820 and 1,089,456

Step by Step Solution

1. Step 1: Write the proportion equation
   725,820 : 1,089,456 = 1,089,456 : x
2. Step 2: Convert to fraction form
   725,820/1,089,456 = 1,089,456/x
3. Step 3: Cross multiply
   725,820x = 1,089,456 × 1,089,456
4. Step 4: Simplify right side
   725,820x = 1,186,914,375,936
5. Step 5: Solve for x
   x = 1,186,914,375,936/725,820
6. Step 6: Final answer
   x = 1,635,273.73