Finding the Third Proportional to 11,620.50 and 17,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,620.50 : 17,779.50 = 17,779.50 : x
2. Step 2: Convert to fraction form
   11,620.50/17,779.50 = 17,779.50/x
3. Step 3: Cross multiply
   11,620.50x = 17,779.50 × 17,779.50
4. Step 4: Simplify right side
   11,620.50x = 316,110,620.25
5. Step 5: Solve for x
   x = 316,110,620.25/11,620.50
6. Step 6: Final answer
   x = 27,202.84