Finding the Third Proportional to 38,990.50 and 55,569.75

Step by Step Solution

1. Step 1: Write the proportion equation
   38,990.50 : 55,569.75 = 55,569.75 : x
2. Step 2: Convert to fraction form
   38,990.50/55,569.75 = 55,569.75/x
3. Step 3: Cross multiply
   38,990.50x = 55,569.75 × 55,569.75
4. Step 4: Simplify right side
   38,990.50x = 3,087,997,115.06
5. Step 5: Solve for x
   x = 3,087,997,115.06/38,990.50
6. Step 6: Final answer
   x = 79,198.71