Finding the Third Proportional to 287,956.69 and 619,381.69

Step by Step Solution

1. Step 1: Write the proportion equation
   287,956.69 : 619,381.69 = 619,381.69 : x
2. Step 2: Convert to fraction form
   287,956.69/619,381.69 = 619,381.69/x
3. Step 3: Cross multiply
   287,956.69x = 619,381.69 × 619,381.69
4. Step 4: Simplify right side
   287,956.69x = 383,633,674,810.35
5. Step 5: Solve for x
   x = 383,633,674,810.35/287,956.69
6. Step 6: Final answer
   x = 1,332,261.73