Finding the Third Proportional to 20,839.50 and 29,779.88

Step by Step Solution

1. Step 1: Write the proportion equation
   20,839.50 : 29,779.88 = 29,779.88 : x
2. Step 2: Convert to fraction form
   20,839.50/29,779.88 = 29,779.88/x
3. Step 3: Cross multiply
   20,839.50x = 29,779.88 × 29,779.88
4. Step 4: Simplify right side
   20,839.50x = 886,840,955.02
5. Step 5: Solve for x
   x = 886,840,955.02/20,839.50
6. Step 6: Final answer
   x = 42,555.77