Finding the Third Proportional to 505,420 and 1,089,564

Step by Step Solution

1. Step 1: Write the proportion equation
   505,420 : 1,089,564 = 1,089,564 : x
2. Step 2: Convert to fraction form
   505,420/1,089,564 = 1,089,564/x
3. Step 3: Cross multiply
   505,420x = 1,089,564 × 1,089,564
4. Step 4: Simplify right side
   505,420x = 1,187,149,710,096
5. Step 5: Solve for x
   x = 1,187,149,710,096/505,420
6. Step 6: Final answer
   x = 2,348,838.02