Finding the Third Proportional to 69,255 and 149,103.28

Step by Step Solution

1. Step 1: Write the proportion equation
   69,255 : 149,103.28 = 149,103.28 : x
2. Step 2: Convert to fraction form
   69,255/149,103.28 = 149,103.28/x
3. Step 3: Cross multiply
   69,255x = 149,103.28 × 149,103.28
4. Step 4: Simplify right side
   69,255x = 22,231,788,479.52
5. Step 5: Solve for x
   x = 22,231,788,479.52/69,255
6. Step 6: Final answer
   x = 321,013.48