Finding the Third Proportional to 42,929 and 89,777

Step by Step Solution

1. Step 1: Write the proportion equation
   42,929 : 89,777 = 89,777 : x
2. Step 2: Convert to fraction form
   42,929/89,777 = 89,777/x
3. Step 3: Cross multiply
   42,929x = 89,777 × 89,777
4. Step 4: Simplify right side
   42,929x = 8,059,909,729
5. Step 5: Solve for x
   x = 8,059,909,729/42,929
6. Step 6: Final answer
   x = 187,749.77