Finding the Third Proportional to 300,942 and 710,370

Step by Step Solution

1. Step 1: Write the proportion equation
   300,942 : 710,370 = 710,370 : x
2. Step 2: Convert to fraction form
   300,942/710,370 = 710,370/x
3. Step 3: Cross multiply
   300,942x = 710,370 × 710,370
4. Step 4: Simplify right side
   300,942x = 504,625,536,900
5. Step 5: Solve for x
   x = 504,625,536,900/300,942
6. Step 6: Final answer
   x = 1,676,819.91