Finding the Third Proportional to 300,972 and 710,442

Step by Step Solution

1. Step 1: Write the proportion equation
   300,972 : 710,442 = 710,442 : x
2. Step 2: Convert to fraction form
   300,972/710,442 = 710,442/x
3. Step 3: Cross multiply
   300,972x = 710,442 × 710,442
4. Step 4: Simplify right side
   300,972x = 504,727,835,364
5. Step 5: Solve for x
   x = 504,727,835,364/300,972
6. Step 6: Final answer
   x = 1,676,992.66