Finding the Third Proportional to 620,433 and 906,018.75

Step by Step Solution

1. Step 1: Write the proportion equation
   620,433 : 906,018.75 = 906,018.75 : x
2. Step 2: Convert to fraction form
   620,433/906,018.75 = 906,018.75/x
3. Step 3: Cross multiply
   620,433x = 906,018.75 × 906,018.75
4. Step 4: Simplify right side
   620,433x = 820,869,975,351.56
5. Step 5: Solve for x
   x = 820,869,975,351.56/620,433
6. Step 6: Final answer
   x = 1,323,059.82