Finding the Third Proportional to 89,314.50 and 190,911

Step by Step Solution

1. Step 1: Write the proportion equation
   89,314.50 : 190,911 = 190,911 : x
2. Step 2: Convert to fraction form
   89,314.50/190,911 = 190,911/x
3. Step 3: Cross multiply
   89,314.50x = 190,911 × 190,911
4. Step 4: Simplify right side
   89,314.50x = 36,447,009,921
5. Step 5: Solve for x
   x = 36,447,009,921/89,314.50
6. Step 6: Final answer
   x = 408,074.95