Finding the Third Proportional to 305,112 and 631,441.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,112 : 631,441.50 = 631,441.50 : x
2. Step 2: Convert to fraction form
   305,112/631,441.50 = 631,441.50/x
3. Step 3: Cross multiply
   305,112x = 631,441.50 × 631,441.50
4. Step 4: Simplify right side
   305,112x = 398,718,367,922.25
5. Step 5: Solve for x
   x = 398,718,367,922.25/305,112
6. Step 6: Final answer
   x = 1,306,793.47