Finding the Third Proportional to 67,699.50 and 146,790

Step by Step Solution

1. Step 1: Write the proportion equation
   67,699.50 : 146,790 = 146,790 : x
2. Step 2: Convert to fraction form
   67,699.50/146,790 = 146,790/x
3. Step 3: Cross multiply
   67,699.50x = 146,790 × 146,790
4. Step 4: Simplify right side
   67,699.50x = 21,547,304,100
5. Step 5: Solve for x
   x = 21,547,304,100/67,699.50
6. Step 6: Final answer
   x = 318,278.63