Finding the Third Proportional to 38,998.13 and 55,729.69

Step by Step Solution

1. Step 1: Write the proportion equation
   38,998.13 : 55,729.69 = 55,729.69 : x
2. Step 2: Convert to fraction form
   38,998.13/55,729.69 = 55,729.69/x
3. Step 3: Cross multiply
   38,998.13x = 55,729.69 × 55,729.69
4. Step 4: Simplify right side
   38,998.13x = 3,105,798,068.85
5. Step 5: Solve for x
   x = 3,105,798,068.85/38,998.13
6. Step 6: Final answer
   x = 79,639.68