Finding the Third Proportional to 781,447.50 and 1,584,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   781,447.50 : 1,584,616.50 = 1,584,616.50 : x
2. Step 2: Convert to fraction form
   781,447.50/1,584,616.50 = 1,584,616.50/x
3. Step 3: Cross multiply
   781,447.50x = 1,584,616.50 × 1,584,616.50
4. Step 4: Simplify right side
   781,447.50x = 2,511,009,452,072.25
5. Step 5: Solve for x
   x = 2,511,009,452,072.25/781,447.50
6. Step 6: Final answer
   x = 3,213,279.78