Finding the Third Proportional to 91,017.75 and 199,531.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,017.75 : 199,531.31 = 199,531.31 : x
2. Step 2: Convert to fraction form
   91,017.75/199,531.31 = 199,531.31/x
3. Step 3: Cross multiply
   91,017.75x = 199,531.31 × 199,531.31
4. Step 4: Simplify right side
   91,017.75x = 39,812,744,667.97
5. Step 5: Solve for x
   x = 39,812,744,667.97/91,017.75
6. Step 6: Final answer
   x = 437,417.37