Finding the Third Proportional to 89,461.50 and 137,058.75

Step by Step Solution

1. Step 1: Write the proportion equation
   89,461.50 : 137,058.75 = 137,058.75 : x
2. Step 2: Convert to fraction form
   89,461.50/137,058.75 = 137,058.75/x
3. Step 3: Cross multiply
   89,461.50x = 137,058.75 × 137,058.75
4. Step 4: Simplify right side
   89,461.50x = 18,785,100,951.56
5. Step 5: Solve for x
   x = 18,785,100,951.56/89,461.50
6. Step 6: Final answer
   x = 209,979.72