Finding the Third Proportional to 305,394 and 665,002.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,394 : 665,002.50 = 665,002.50 : x
2. Step 2: Convert to fraction form
   305,394/665,002.50 = 665,002.50/x
3. Step 3: Cross multiply
   305,394x = 665,002.50 × 665,002.50
4. Step 4: Simplify right side
   305,394x = 442,228,325,006.25
5. Step 5: Solve for x
   x = 442,228,325,006.25/305,394
6. Step 6: Final answer
   x = 1,448,058.33