Finding the Third Proportional to 90,811.50 and 141,736.25

Step by Step Solution

1. Step 1: Write the proportion equation
   90,811.50 : 141,736.25 = 141,736.25 : x
2. Step 2: Convert to fraction form
   90,811.50/141,736.25 = 141,736.25/x
3. Step 3: Cross multiply
   90,811.50x = 141,736.25 × 141,736.25
4. Step 4: Simplify right side
   90,811.50x = 20,089,164,564.06
5. Step 5: Solve for x
   x = 20,089,164,564.06/90,811.50
6. Step 6: Final answer
   x = 221,218.29