Finding the Third Proportional to 89,215 and 131,358

Step by Step Solution

1. Step 1: Write the proportion equation
   89,215 : 131,358 = 131,358 : x
2. Step 2: Convert to fraction form
   89,215/131,358 = 131,358/x
3. Step 3: Cross multiply
   89,215x = 131,358 × 131,358
4. Step 4: Simplify right side
   89,215x = 17,254,924,164
5. Step 5: Solve for x
   x = 17,254,924,164/89,215
6. Step 6: Final answer
   x = 193,408.33