Finding the Third Proportional to 20,566 and 42,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,566 : 42,687.50 = 42,687.50 : x
2. Step 2: Convert to fraction form
   20,566/42,687.50 = 42,687.50/x
3. Step 3: Cross multiply
   20,566x = 42,687.50 × 42,687.50
4. Step 4: Simplify right side
   20,566x = 1,822,222,656.25
5. Step 5: Solve for x
   x = 1,822,222,656.25/20,566
6. Step 6: Final answer
   x = 88,603.65