Finding the Third Proportional to 42,921 and 89,763

Step by Step Solution

1. Step 1: Write the proportion equation
   42,921 : 89,763 = 89,763 : x
2. Step 2: Convert to fraction form
   42,921/89,763 = 89,763/x
3. Step 3: Cross multiply
   42,921x = 89,763 × 89,763
4. Step 4: Simplify right side
   42,921x = 8,057,396,169
5. Step 5: Solve for x
   x = 8,057,396,169/42,921
6. Step 6: Final answer
   x = 187,726.20