Finding the Third Proportional to 620,811 and 974,499

Step by Step Solution

1. Step 1: Write the proportion equation
   620,811 : 974,499 = 974,499 : x
2. Step 2: Convert to fraction form
   620,811/974,499 = 974,499/x
3. Step 3: Cross multiply
   620,811x = 974,499 × 974,499
4. Step 4: Simplify right side
   620,811x = 949,648,301,001
5. Step 5: Solve for x
   x = 949,648,301,001/620,811
6. Step 6: Final answer
   x = 1,529,689.88