Finding the Third Proportional to 91,647.28 and 191,674.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,647.28 : 191,674.69 = 191,674.69 : x
2. Step 2: Convert to fraction form
   91,647.28/191,674.69 = 191,674.69/x
3. Step 3: Cross multiply
   91,647.28x = 191,674.69 × 191,674.69
4. Step 4: Simplify right side
   91,647.28x = 36,739,185,828.22
5. Step 5: Solve for x
   x = 36,739,185,828.22/91,647.28
6. Step 6: Final answer
   x = 400,875.89