Finding the Third Proportional to 20,248 and 42,543.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,248 : 42,543.50 = 42,543.50 : x
2. Step 2: Convert to fraction form
   20,248/42,543.50 = 42,543.50/x
3. Step 3: Cross multiply
   20,248x = 42,543.50 × 42,543.50
4. Step 4: Simplify right side
   20,248x = 1,809,949,392.25
5. Step 5: Solve for x
   x = 1,809,949,392.25/20,248
6. Step 6: Final answer
   x = 89,389.05