Finding the Third Proportional to 393,592 and 552,300

Step by Step Solution

1. Step 1: Write the proportion equation
   393,592 : 552,300 = 552,300 : x
2. Step 2: Convert to fraction form
   393,592/552,300 = 552,300/x
3. Step 3: Cross multiply
   393,592x = 552,300 × 552,300
4. Step 4: Simplify right side
   393,592x = 305,035,290,000
5. Step 5: Solve for x
   x = 305,035,290,000/393,592
6. Step 6: Final answer
   x = 775,003.79