Finding the Third Proportional to 20,740.50 and 42,453

Step by Step Solution

1. Step 1: Write the proportion equation
   20,740.50 : 42,453 = 42,453 : x
2. Step 2: Convert to fraction form
   20,740.50/42,453 = 42,453/x
3. Step 3: Cross multiply
   20,740.50x = 42,453 × 42,453
4. Step 4: Simplify right side
   20,740.50x = 1,802,257,209
5. Step 5: Solve for x
   x = 1,802,257,209/20,740.50
6. Step 6: Final answer
   x = 86,895.55