Finding the Third Proportional to 331,245 and 714,947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,245 : 714,947.50 = 714,947.50 : x
2. Step 2: Convert to fraction form
   331,245/714,947.50 = 714,947.50/x
3. Step 3: Cross multiply
   331,245x = 714,947.50 × 714,947.50
4. Step 4: Simplify right side
   331,245x = 511,149,927,756.25
5. Step 5: Solve for x
   x = 511,149,927,756.25/331,245
6. Step 6: Final answer
   x = 1,543,117.41