Finding the Third Proportional to 401,760 and 891,632

Step by Step Solution

1. Step 1: Write the proportion equation
   401,760 : 891,632 = 891,632 : x
2. Step 2: Convert to fraction form
   401,760/891,632 = 891,632/x
3. Step 3: Cross multiply
   401,760x = 891,632 × 891,632
4. Step 4: Simplify right side
   401,760x = 795,007,623,424
5. Step 5: Solve for x
   x = 795,007,623,424/401,760
6. Step 6: Final answer
   x = 1,978,812.28