Finding the Third Proportional to 89,310.50 and 190,903

Step by Step Solution

1. Step 1: Write the proportion equation
   89,310.50 : 190,903 = 190,903 : x
2. Step 2: Convert to fraction form
   89,310.50/190,903 = 190,903/x
3. Step 3: Cross multiply
   89,310.50x = 190,903 × 190,903
4. Step 4: Simplify right side
   89,310.50x = 36,443,955,409
5. Step 5: Solve for x
   x = 36,443,955,409/89,310.50
6. Step 6: Final answer
   x = 408,059.02