Finding the Third Proportional to 40,272.50 and 90,988.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,272.50 : 90,988.50 = 90,988.50 : x
2. Step 2: Convert to fraction form
   40,272.50/90,988.50 = 90,988.50/x
3. Step 3: Cross multiply
   40,272.50x = 90,988.50 × 90,988.50
4. Step 4: Simplify right side
   40,272.50x = 8,278,907,132.25
5. Step 5: Solve for x
   x = 8,278,907,132.25/40,272.50
6. Step 6: Final answer
   x = 205,572.22