Finding the Third Proportional to 90,405.50 and 189,073

Step by Step Solution

1. Step 1: Write the proportion equation
   90,405.50 : 189,073 = 189,073 : x
2. Step 2: Convert to fraction form
   90,405.50/189,073 = 189,073/x
3. Step 3: Cross multiply
   90,405.50x = 189,073 × 189,073
4. Step 4: Simplify right side
   90,405.50x = 35,748,599,329
5. Step 5: Solve for x
   x = 35,748,599,329/90,405.50
6. Step 6: Final answer
   x = 395,425.05