Finding the Third Proportional to 621,290.25 and 982,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   621,290.25 : 982,003.50 = 982,003.50 : x
2. Step 2: Convert to fraction form
   621,290.25/982,003.50 = 982,003.50/x
3. Step 3: Cross multiply
   621,290.25x = 982,003.50 × 982,003.50
4. Step 4: Simplify right side
   621,290.25x = 964,330,874,012.25
5. Step 5: Solve for x
   x = 964,330,874,012.25/621,290.25
6. Step 6: Final answer
   x = 1,552,142.29