Finding the Third Proportional to 20,769 and 42,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,769 : 42,757.50 = 42,757.50 : x
2. Step 2: Convert to fraction form
   20,769/42,757.50 = 42,757.50/x
3. Step 3: Cross multiply
   20,769x = 42,757.50 × 42,757.50
4. Step 4: Simplify right side
   20,769x = 1,828,203,806.25
5. Step 5: Solve for x
   x = 1,828,203,806.25/20,769
6. Step 6: Final answer
   x = 88,025.61