Finding the Third Proportional to 69,001.50 and 140,905.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,001.50 : 140,905.50 = 140,905.50 : x
2. Step 2: Convert to fraction form
   69,001.50/140,905.50 = 140,905.50/x
3. Step 3: Cross multiply
   69,001.50x = 140,905.50 × 140,905.50
4. Step 4: Simplify right side
   69,001.50x = 19,854,359,930.25
5. Step 5: Solve for x
   x = 19,854,359,930.25/69,001.50
6. Step 6: Final answer
   x = 287,738.09