Finding the Third Proportional to 91,191 and 189,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,191 : 189,628.50 = 189,628.50 : x
2. Step 2: Convert to fraction form
   91,191/189,628.50 = 189,628.50/x
3. Step 3: Cross multiply
   91,191x = 189,628.50 × 189,628.50
4. Step 4: Simplify right side
   91,191x = 35,958,968,012.25
5. Step 5: Solve for x
   x = 35,958,968,012.25/91,191
6. Step 6: Final answer
   x = 394,325.84