Finding the Third Proportional to 89,619.50 and 137,562.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,619.50 : 137,562.25 = 137,562.25 : x
2. Step 2: Convert to fraction form
   89,619.50/137,562.25 = 137,562.25/x
3. Step 3: Cross multiply
   89,619.50x = 137,562.25 × 137,562.25
4. Step 4: Simplify right side
   89,619.50x = 18,923,372,625.06
5. Step 5: Solve for x
   x = 18,923,372,625.06/89,619.50
6. Step 6: Final answer
   x = 211,152.40