Finding the Third Proportional to 342,144 and 499,824

Step by Step Solution

1. Step 1: Write the proportion equation
   342,144 : 499,824 = 499,824 : x
2. Step 2: Convert to fraction form
   342,144/499,824 = 499,824/x
3. Step 3: Cross multiply
   342,144x = 499,824 × 499,824
4. Step 4: Simplify right side
   342,144x = 249,824,030,976
5. Step 5: Solve for x
   x = 249,824,030,976/342,144
6. Step 6: Final answer
   x = 730,172.18