Finding the Third Proportional to 67,690.50 and 146,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,690.50 : 146,680.50 = 146,680.50 : x
2. Step 2: Convert to fraction form
   67,690.50/146,680.50 = 146,680.50/x
3. Step 3: Cross multiply
   67,690.50x = 146,680.50 × 146,680.50
4. Step 4: Simplify right side
   67,690.50x = 21,515,169,080.25
5. Step 5: Solve for x
   x = 21,515,169,080.25/67,690.50
6. Step 6: Final answer
   x = 317,846.21