Finding the Third Proportional to 499,812 and 712,323

Step by Step Solution

1. Step 1: Write the proportion equation
   499,812 : 712,323 = 712,323 : x
2. Step 2: Convert to fraction form
   499,812/712,323 = 712,323/x
3. Step 3: Cross multiply
   499,812x = 712,323 × 712,323
4. Step 4: Simplify right side
   499,812x = 507,404,056,329
5. Step 5: Solve for x
   x = 507,404,056,329/499,812
6. Step 6: Final answer
   x = 1,015,189.82