Finding the Third Proportional to 309,968.44 and 478,764

Step by Step Solution

1. Step 1: Write the proportion equation
   309,968.44 : 478,764 = 478,764 : x
2. Step 2: Convert to fraction form
   309,968.44/478,764 = 478,764/x
3. Step 3: Cross multiply
   309,968.44x = 478,764 × 478,764
4. Step 4: Simplify right side
   309,968.44x = 229,214,967,696
5. Step 5: Solve for x
   x = 229,214,967,696/309,968.44
6. Step 6: Final answer
   x = 739,478.41