Finding the Third Proportional to 69,799.50 and 145,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,799.50 : 145,498.50 = 145,498.50 : x
2. Step 2: Convert to fraction form
   69,799.50/145,498.50 = 145,498.50/x
3. Step 3: Cross multiply
   69,799.50x = 145,498.50 × 145,498.50
4. Step 4: Simplify right side
   69,799.50x = 21,169,813,502.25
5. Step 5: Solve for x
   x = 21,169,813,502.25/69,799.50
6. Step 6: Final answer
   x = 303,294.63