Finding the Third Proportional to 91,159.50 and 137,996.25

Step by Step Solution

1. Step 1: Write the proportion equation
   91,159.50 : 137,996.25 = 137,996.25 : x
2. Step 2: Convert to fraction form
   91,159.50/137,996.25 = 137,996.25/x
3. Step 3: Cross multiply
   91,159.50x = 137,996.25 × 137,996.25
4. Step 4: Simplify right side
   91,159.50x = 19,042,965,014.06
5. Step 5: Solve for x
   x = 19,042,965,014.06/91,159.50
6. Step 6: Final answer
   x = 208,897.21