Finding the Third Proportional to 42,184 and 85,580

Step by Step Solution

1. Step 1: Write the proportion equation
   42,184 : 85,580 = 85,580 : x
2. Step 2: Convert to fraction form
   42,184/85,580 = 85,580/x
3. Step 3: Cross multiply
   42,184x = 85,580 × 85,580
4. Step 4: Simplify right side
   42,184x = 7,323,936,400
5. Step 5: Solve for x
   x = 7,323,936,400/42,184
6. Step 6: Final answer
   x = 173,618.82