Finding the Third Proportional to 448,139.25 and 980,194.50

Step by Step Solution

1. Step 1: Write the proportion equation
   448,139.25 : 980,194.50 = 980,194.50 : x
2. Step 2: Convert to fraction form
   448,139.25/980,194.50 = 980,194.50/x
3. Step 3: Cross multiply
   448,139.25x = 980,194.50 × 980,194.50
4. Step 4: Simplify right side
   448,139.25x = 960,781,257,830.25
5. Step 5: Solve for x
   x = 960,781,257,830.25/448,139.25
6. Step 6: Final answer
   x = 2,143,934.63