Finding the Third Proportional to 499,892 and 714,340

Step by Step Solution

1. Step 1: Write the proportion equation
   499,892 : 714,340 = 714,340 : x
2. Step 2: Convert to fraction form
   499,892/714,340 = 714,340/x
3. Step 3: Cross multiply
   499,892x = 714,340 × 714,340
4. Step 4: Simplify right side
   499,892x = 510,281,635,600
5. Step 5: Solve for x
   x = 510,281,635,600/499,892
6. Step 6: Final answer
   x = 1,020,783.76