Finding the Third Proportional to 878,128 and 1,324,112

Step by Step Solution

1. Step 1: Write the proportion equation
   878,128 : 1,324,112 = 1,324,112 : x
2. Step 2: Convert to fraction form
   878,128/1,324,112 = 1,324,112/x
3. Step 3: Cross multiply
   878,128x = 1,324,112 × 1,324,112
4. Step 4: Simplify right side
   878,128x = 1,753,272,588,544
5. Step 5: Solve for x
   x = 1,753,272,588,544/878,128
6. Step 6: Final answer
   x = 1,996,602.53