Finding the Third Proportional to 518,446.50 and 793,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   518,446.50 : 793,456.50 = 793,456.50 : x
2. Step 2: Convert to fraction form
   518,446.50/793,456.50 = 793,456.50/x
3. Step 3: Cross multiply
   518,446.50x = 793,456.50 × 793,456.50
4. Step 4: Simplify right side
   518,446.50x = 629,573,217,392.25
5. Step 5: Solve for x
   x = 629,573,217,392.25/518,446.50
6. Step 6: Final answer
   x = 1,214,345.58