Finding the Third Proportional to 310,512 and 632,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   310,512 : 632,443.50 = 632,443.50 : x
2. Step 2: Convert to fraction form
   310,512/632,443.50 = 632,443.50/x
3. Step 3: Cross multiply
   310,512x = 632,443.50 × 632,443.50
4. Step 4: Simplify right side
   310,512x = 399,984,780,692.25
5. Step 5: Solve for x
   x = 399,984,780,692.25/310,512
6. Step 6: Final answer
   x = 1,288,145.97