Finding the Third Proportional to 275,560.50 and 390,024

Step by Step Solution

1. Step 1: Write the proportion equation
   275,560.50 : 390,024 = 390,024 : x
2. Step 2: Convert to fraction form
   275,560.50/390,024 = 390,024/x
3. Step 3: Cross multiply
   275,560.50x = 390,024 × 390,024
4. Step 4: Simplify right side
   275,560.50x = 152,118,720,576
5. Step 5: Solve for x
   x = 152,118,720,576/275,560.50
6. Step 6: Final answer
   x = 552,033.84