Finding the Third Proportional to 548,258 and 822,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   548,258 : 822,383.50 = 822,383.50 : x
2. Step 2: Convert to fraction form
   548,258/822,383.50 = 822,383.50/x
3. Step 3: Cross multiply
   548,258x = 822,383.50 × 822,383.50
4. Step 4: Simplify right side
   548,258x = 676,314,621,072.25
5. Step 5: Solve for x
   x = 676,314,621,072.25/548,258
6. Step 6: Final answer
   x = 1,233,570.00