Finding the Third Proportional to 820,615.50 and 1,298,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   820,615.50 : 1,298,371.50 = 1,298,371.50 : x
2. Step 2: Convert to fraction form
   820,615.50/1,298,371.50 = 1,298,371.50/x
3. Step 3: Cross multiply
   820,615.50x = 1,298,371.50 × 1,298,371.50
4. Step 4: Simplify right side
   820,615.50x = 1,685,768,552,012.25
5. Step 5: Solve for x
   x = 1,685,768,552,012.25/820,615.50
6. Step 6: Final answer
   x = 2,054,273.35