Finding the Third Proportional to 319,071 and 493,991.25

Step by Step Solution

1. Step 1: Write the proportion equation
   319,071 : 493,991.25 = 493,991.25 : x
2. Step 2: Convert to fraction form
   319,071/493,991.25 = 493,991.25/x
3. Step 3: Cross multiply
   319,071x = 493,991.25 × 493,991.25
4. Step 4: Simplify right side
   319,071x = 244,027,355,076.56
5. Step 5: Solve for x
   x = 244,027,355,076.56/319,071
6. Step 6: Final answer
   x = 764,805.81