Finding the Third Proportional to 38,779.50 and 55,912.88

Step by Step Solution

1. Step 1: Write the proportion equation
   38,779.50 : 55,912.88 = 55,912.88 : x
2. Step 2: Convert to fraction form
   38,779.50/55,912.88 = 55,912.88/x
3. Step 3: Cross multiply
   38,779.50x = 55,912.88 × 55,912.88
4. Step 4: Simplify right side
   38,779.50x = 3,126,249,590.77
5. Step 5: Solve for x
   x = 3,126,249,590.77/38,779.50
6. Step 6: Final answer
   x = 80,616.04