Finding the Third Proportional to 20,583 and 42,907.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,583 : 42,907.50 = 42,907.50 : x
2. Step 2: Convert to fraction form
   20,583/42,907.50 = 42,907.50/x
3. Step 3: Cross multiply
   20,583x = 42,907.50 × 42,907.50
4. Step 4: Simplify right side
   20,583x = 1,841,053,556.25
5. Step 5: Solve for x
   x = 1,841,053,556.25/20,583
6. Step 6: Final answer
   x = 89,445.35