Finding the Third Proportional to 89,735.63 and 140,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,735.63 : 140,788.50 = 140,788.50 : x
2. Step 2: Convert to fraction form
   89,735.63/140,788.50 = 140,788.50/x
3. Step 3: Cross multiply
   89,735.63x = 140,788.50 × 140,788.50
4. Step 4: Simplify right side
   89,735.63x = 19,821,401,732.25
5. Step 5: Solve for x
   x = 19,821,401,732.25/89,735.63
6. Step 6: Final answer
   x = 220,886.65