Finding the Third Proportional to 90,308.25 and 140,632.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,308.25 : 140,632.50 = 140,632.50 : x
2. Step 2: Convert to fraction form
   90,308.25/140,632.50 = 140,632.50/x
3. Step 3: Cross multiply
   90,308.25x = 140,632.50 × 140,632.50
4. Step 4: Simplify right side
   90,308.25x = 19,777,500,056.25
5. Step 5: Solve for x
   x = 19,777,500,056.25/90,308.25
6. Step 6: Final answer
   x = 218,999.93