Finding the Third Proportional to 69,496.50 and 144,870

Step by Step Solution

1. Step 1: Write the proportion equation
   69,496.50 : 144,870 = 144,870 : x
2. Step 2: Convert to fraction form
   69,496.50/144,870 = 144,870/x
3. Step 3: Cross multiply
   69,496.50x = 144,870 × 144,870
4. Step 4: Simplify right side
   69,496.50x = 20,987,316,900
5. Step 5: Solve for x
   x = 20,987,316,900/69,496.50
6. Step 6: Final answer
   x = 301,990.99