Finding the Third Proportional to 548,262 and 822,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   548,262 : 822,389.50 = 822,389.50 : x
2. Step 2: Convert to fraction form
   548,262/822,389.50 = 822,389.50/x
3. Step 3: Cross multiply
   548,262x = 822,389.50 × 822,389.50
4. Step 4: Simplify right side
   548,262x = 676,324,489,710.25
5. Step 5: Solve for x
   x = 676,324,489,710.25/548,262
6. Step 6: Final answer
   x = 1,233,579.00