Finding the Third Proportional to 18,309.80 and 38,077.17

Step by Step Solution

1. Step 1: Write the proportion equation
   18,309.80 : 38,077.17 = 38,077.17 : x
2. Step 2: Convert to fraction form
   18,309.80/38,077.17 = 38,077.17/x
3. Step 3: Cross multiply
   18,309.80x = 38,077.17 × 38,077.17
4. Step 4: Simplify right side
   18,309.80x = 1,449,871,018.00
5. Step 5: Solve for x
   x = 1,449,871,018.00/18,309.80
6. Step 6: Final answer
   x = 79,185.53