Finding the Third Proportional to 69,437.25 and 144,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,437.25 : 144,328.50 = 144,328.50 : x
2. Step 2: Convert to fraction form
   69,437.25/144,328.50 = 144,328.50/x
3. Step 3: Cross multiply
   69,437.25x = 144,328.50 × 144,328.50
4. Step 4: Simplify right side
   69,437.25x = 20,830,715,912.25
5. Step 5: Solve for x
   x = 20,830,715,912.25/69,437.25
6. Step 6: Final answer
   x = 299,993.39