Finding the Third Proportional to 144,567 and 313,267.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,567 : 313,267.50 = 313,267.50 : x
2. Step 2: Convert to fraction form
   144,567/313,267.50 = 313,267.50/x
3. Step 3: Cross multiply
   144,567x = 313,267.50 × 313,267.50
4. Step 4: Simplify right side
   144,567x = 98,136,526,556.25
5. Step 5: Solve for x
   x = 98,136,526,556.25/144,567
6. Step 6: Final answer
   x = 678,830.76