Finding the Third Proportional to 300,069 and 654,058.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,069 : 654,058.50 = 654,058.50 : x
2. Step 2: Convert to fraction form
   300,069/654,058.50 = 654,058.50/x
3. Step 3: Cross multiply
   300,069x = 654,058.50 × 654,058.50
4. Step 4: Simplify right side
   300,069x = 427,792,521,422.25
5. Step 5: Solve for x
   x = 427,792,521,422.25/300,069
6. Step 6: Final answer
   x = 1,425,647.17