Finding the Third Proportional to 461,821.50 and 891,648

Step by Step Solution

1. Step 1: Write the proportion equation
   461,821.50 : 891,648 = 891,648 : x
2. Step 2: Convert to fraction form
   461,821.50/891,648 = 891,648/x
3. Step 3: Cross multiply
   461,821.50x = 891,648 × 891,648
4. Step 4: Simplify right side
   461,821.50x = 795,036,155,904
5. Step 5: Solve for x
   x = 795,036,155,904/461,821.50
6. Step 6: Final answer
   x = 1,721,522.61