Finding the Third Proportional to 89,822.50 and 140,905

Step by Step Solution

1. Step 1: Write the proportion equation
   89,822.50 : 140,905 = 140,905 : x
2. Step 2: Convert to fraction form
   89,822.50/140,905 = 140,905/x
3. Step 3: Cross multiply
   89,822.50x = 140,905 × 140,905
4. Step 4: Simplify right side
   89,822.50x = 19,854,219,025
5. Step 5: Solve for x
   x = 19,854,219,025/89,822.50
6. Step 6: Final answer
   x = 221,038.37