Finding the Third Proportional to 38,401.31 and 79,868.81

Step by Step Solution

1. Step 1: Write the proportion equation
   38,401.31 : 79,868.81 = 79,868.81 : x
2. Step 2: Convert to fraction form
   38,401.31/79,868.81 = 79,868.81/x
3. Step 3: Cross multiply
   38,401.31x = 79,868.81 × 79,868.81
4. Step 4: Simplify right side
   38,401.31x = 6,379,027,210.16
5. Step 5: Solve for x
   x = 6,379,027,210.16/38,401.31
6. Step 6: Final answer
   x = 166,114.82