Finding the Third Proportional to 20,583 and 42,136.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,583 : 42,136.88 = 42,136.88 : x
2. Step 2: Convert to fraction form
   20,583/42,136.88 = 42,136.88/x
3. Step 3: Cross multiply
   20,583x = 42,136.88 × 42,136.88
4. Step 4: Simplify right side
   20,583x = 1,775,516,234.77
5. Step 5: Solve for x
   x = 1,775,516,234.77/20,583
6. Step 6: Final answer
   x = 86,261.29