Finding the Third Proportional to 401,498 and 891,570

Step by Step Solution

1. Step 1: Write the proportion equation
   401,498 : 891,570 = 891,570 : x
2. Step 2: Convert to fraction form
   401,498/891,570 = 891,570/x
3. Step 3: Cross multiply
   401,498x = 891,570 × 891,570
4. Step 4: Simplify right side
   401,498x = 794,897,064,900
5. Step 5: Solve for x
   x = 794,897,064,900/401,498
6. Step 6: Final answer
   x = 1,979,828.21