Finding the Third Proportional to 89,770.50 and 136,521

Step by Step Solution

1. Step 1: Write the proportion equation
   89,770.50 : 136,521 = 136,521 : x
2. Step 2: Convert to fraction form
   89,770.50/136,521 = 136,521/x
3. Step 3: Cross multiply
   89,770.50x = 136,521 × 136,521
4. Step 4: Simplify right side
   89,770.50x = 18,637,983,441
5. Step 5: Solve for x
   x = 18,637,983,441/89,770.50
6. Step 6: Final answer
   x = 207,618.13