Finding the Third Proportional to 20,391.75 and 35,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,391.75 : 35,779.50 = 35,779.50 : x
2. Step 2: Convert to fraction form
   20,391.75/35,779.50 = 35,779.50/x
3. Step 3: Cross multiply
   20,391.75x = 35,779.50 × 35,779.50
4. Step 4: Simplify right side
   20,391.75x = 1,280,172,620.25
5. Step 5: Solve for x
   x = 1,280,172,620.25/20,391.75
6. Step 6: Final answer
   x = 62,778.95