Finding the Third Proportional to 67,680.56 and 105,213.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67,680.56 : 105,213.94 = 105,213.94 : x
2. Step 2: Convert to fraction form
   67,680.56/105,213.94 = 105,213.94/x
3. Step 3: Cross multiply
   67,680.56x = 105,213.94 × 105,213.94
4. Step 4: Simplify right side
   67,680.56x = 11,069,972,644.25
5. Step 5: Solve for x
   x = 11,069,972,644.25/67,680.56
6. Step 6: Final answer
   x = 163,562.07