Finding the Third Proportional to 350,892 and 743,640.75

Step by Step Solution

1. Step 1: Write the proportion equation
   350,892 : 743,640.75 = 743,640.75 : x
2. Step 2: Convert to fraction form
   350,892/743,640.75 = 743,640.75/x
3. Step 3: Cross multiply
   350,892x = 743,640.75 × 743,640.75
4. Step 4: Simplify right side
   350,892x = 553,001,565,060.56
5. Step 5: Solve for x
   x = 553,001,565,060.56/350,892
6. Step 6: Final answer
   x = 1,575,987.95