Finding the Third Proportional to 681,567.50 and 1,058,362.50

Step by Step Solution

1. Step 1: Write the proportion equation
   681,567.50 : 1,058,362.50 = 1,058,362.50 : x
2. Step 2: Convert to fraction form
   681,567.50/1,058,362.50 = 1,058,362.50/x
3. Step 3: Cross multiply
   681,567.50x = 1,058,362.50 × 1,058,362.50
4. Step 4: Simplify right side
   681,567.50x = 1,120,131,181,406.25
5. Step 5: Solve for x
   x = 1,120,131,181,406.25/681,567.50
6. Step 6: Final answer
   x = 1,643,463.31