Finding the Third Proportional to 38,439.56 and 81,055.69

Step by Step Solution

1. Step 1: Write the proportion equation
   38,439.56 : 81,055.69 = 81,055.69 : x
2. Step 2: Convert to fraction form
   38,439.56/81,055.69 = 81,055.69/x
3. Step 3: Cross multiply
   38,439.56x = 81,055.69 × 81,055.69
4. Step 4: Simplify right side
   38,439.56x = 6,570,024,476.10
5. Step 5: Solve for x
   x = 6,570,024,476.10/38,439.56
6. Step 6: Final answer
   x = 170,918.29