Finding the Third Proportional to 191,133 and 287,181

Step by Step Solution

1. Step 1: Write the proportion equation
   191,133 : 287,181 = 287,181 : x
2. Step 2: Convert to fraction form
   191,133/287,181 = 287,181/x
3. Step 3: Cross multiply
   191,133x = 287,181 × 287,181
4. Step 4: Simplify right side
   191,133x = 82,472,926,761
5. Step 5: Solve for x
   x = 82,472,926,761/191,133
6. Step 6: Final answer
   x = 431,494.96