Finding the Third Proportional to 401,769 and 891,650

Step by Step Solution

1. Step 1: Write the proportion equation
   401,769 : 891,650 = 891,650 : x
2. Step 2: Convert to fraction form
   401,769/891,650 = 891,650/x
3. Step 3: Cross multiply
   401,769x = 891,650 × 891,650
4. Step 4: Simplify right side
   401,769x = 795,039,722,500
5. Step 5: Solve for x
   x = 795,039,722,500/401,769
6. Step 6: Final answer
   x = 1,978,847.85