Finding the Third Proportional to 89,768.50 and 136,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,768.50 : 136,518.50 = 136,518.50 : x
2. Step 2: Convert to fraction form
   89,768.50/136,518.50 = 136,518.50/x
3. Step 3: Cross multiply
   89,768.50x = 136,518.50 × 136,518.50
4. Step 4: Simplify right side
   89,768.50x = 18,637,300,842.25
5. Step 5: Solve for x
   x = 18,637,300,842.25/89,768.50
6. Step 6: Final answer
   x = 207,615.15