Finding the Third Proportional to 69,726 and 143,578.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,726 : 143,578.50 = 143,578.50 : x
2. Step 2: Convert to fraction form
   69,726/143,578.50 = 143,578.50/x
3. Step 3: Cross multiply
   69,726x = 143,578.50 × 143,578.50
4. Step 4: Simplify right side
   69,726x = 20,614,785,662.25
5. Step 5: Solve for x
   x = 20,614,785,662.25/69,726
6. Step 6: Final answer
   x = 295,654.21