Finding the Third Proportional to 661,239 and 982,138.50

Step by Step Solution

1. Step 1: Write the proportion equation
   661,239 : 982,138.50 = 982,138.50 : x
2. Step 2: Convert to fraction form
   661,239/982,138.50 = 982,138.50/x
3. Step 3: Cross multiply
   661,239x = 982,138.50 × 982,138.50
4. Step 4: Simplify right side
   661,239x = 964,596,033,182.25
5. Step 5: Solve for x
   x = 964,596,033,182.25/661,239
6. Step 6: Final answer
   x = 1,458,770.63