Finding the Third Proportional to 308,454.50 and 743,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,454.50 : 743,079.50 = 743,079.50 : x
2. Step 2: Convert to fraction form
   308,454.50/743,079.50 = 743,079.50/x
3. Step 3: Cross multiply
   308,454.50x = 743,079.50 × 743,079.50
4. Step 4: Simplify right side
   308,454.50x = 552,167,143,320.25
5. Step 5: Solve for x
   x = 552,167,143,320.25/308,454.50
6. Step 6: Final answer
   x = 1,790,108.89