Finding the Third Proportional to 68,799.56 and 145,059.56

Step by Step Solution

1. Step 1: Write the proportion equation
   68,799.56 : 145,059.56 = 145,059.56 : x
2. Step 2: Convert to fraction form
   68,799.56/145,059.56 = 145,059.56/x
3. Step 3: Cross multiply
   68,799.56x = 145,059.56 × 145,059.56
4. Step 4: Simplify right side
   68,799.56x = 21,042,276,672.69
5. Step 5: Solve for x
   x = 21,042,276,672.69/68,799.56
6. Step 6: Final answer
   x = 305,848.99