Finding the Third Proportional to 89,985.50 and 196,920.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,985.50 : 196,920.25 = 196,920.25 : x
2. Step 2: Convert to fraction form
   89,985.50/196,920.25 = 196,920.25/x
3. Step 3: Cross multiply
   89,985.50x = 196,920.25 × 196,920.25
4. Step 4: Simplify right side
   89,985.50x = 38,777,584,860.06
5. Step 5: Solve for x
   x = 38,777,584,860.06/89,985.50
6. Step 6: Final answer
   x = 430,931.48