Finding the Third Proportional to 42,179 and 89,099

Step by Step Solution

1. Step 1: Write the proportion equation
   42,179 : 89,099 = 89,099 : x
2. Step 2: Convert to fraction form
   42,179/89,099 = 89,099/x
3. Step 3: Cross multiply
   42,179x = 89,099 × 89,099
4. Step 4: Simplify right side
   42,179x = 7,938,631,801
5. Step 5: Solve for x
   x = 7,938,631,801/42,179
6. Step 6: Final answer
   x = 188,212.90