Finding the Third Proportional to 91,020 and 189,308

Step by Step Solution

1. Step 1: Write the proportion equation
   91,020 : 189,308 = 189,308 : x
2. Step 2: Convert to fraction form
   91,020/189,308 = 189,308/x
3. Step 3: Cross multiply
   91,020x = 189,308 × 189,308
4. Step 4: Simplify right side
   91,020x = 35,837,518,864
5. Step 5: Solve for x
   x = 35,837,518,864/91,020
6. Step 6: Final answer
   x = 393,732.35