Finding the Third Proportional to 69,105.75 and 145,174.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,105.75 : 145,174.50 = 145,174.50 : x
2. Step 2: Convert to fraction form
   69,105.75/145,174.50 = 145,174.50/x
3. Step 3: Cross multiply
   69,105.75x = 145,174.50 × 145,174.50
4. Step 4: Simplify right side
   69,105.75x = 21,075,635,450.25
5. Step 5: Solve for x
   x = 21,075,635,450.25/69,105.75
6. Step 6: Final answer
   x = 304,976.58