Finding the Third Proportional to 817,458 and 1,978,035

Step by Step Solution

1. Step 1: Write the proportion equation
   817,458 : 1,978,035 = 1,978,035 : x
2. Step 2: Convert to fraction form
   817,458/1,978,035 = 1,978,035/x
3. Step 3: Cross multiply
   817,458x = 1,978,035 × 1,978,035
4. Step 4: Simplify right side
   817,458x = 3,912,622,461,225
5. Step 5: Solve for x
   x = 3,912,622,461,225/817,458
6. Step 6: Final answer
   x = 4,786,328.42