Finding the Third Proportional to 401,499 and 891,571

Step by Step Solution

1. Step 1: Write the proportion equation
   401,499 : 891,571 = 891,571 : x
2. Step 2: Convert to fraction form
   401,499/891,571 = 891,571/x
3. Step 3: Cross multiply
   401,499x = 891,571 × 891,571
4. Step 4: Simplify right side
   401,499x = 794,898,848,041
5. Step 5: Solve for x
   x = 794,898,848,041/401,499
6. Step 6: Final answer
   x = 1,979,827.72