Finding the Third Proportional to 90,590.50 and 133,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,590.50 : 133,221.50 = 133,221.50 : x
2. Step 2: Convert to fraction form
   90,590.50/133,221.50 = 133,221.50/x
3. Step 3: Cross multiply
   90,590.50x = 133,221.50 × 133,221.50
4. Step 4: Simplify right side
   90,590.50x = 17,747,968,062.25
5. Step 5: Solve for x
   x = 17,747,968,062.25/90,590.50
6. Step 6: Final answer
   x = 195,914.23