Finding the Third Proportional to 308,259 and 483,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,259 : 483,691.50 = 483,691.50 : x
2. Step 2: Convert to fraction form
   308,259/483,691.50 = 483,691.50/x
3. Step 3: Cross multiply
   308,259x = 483,691.50 × 483,691.50
4. Step 4: Simplify right side
   308,259x = 233,957,467,172.25
5. Step 5: Solve for x
   x = 233,957,467,172.25/308,259
6. Step 6: Final answer
   x = 758,963.95