Finding the Third Proportional to 78,662.81 and 124,621.03

Step by Step Solution

1. Step 1: Write the proportion equation
   78,662.81 : 124,621.03 = 124,621.03 : x
2. Step 2: Convert to fraction form
   78,662.81/124,621.03 = 124,621.03/x
3. Step 3: Cross multiply
   78,662.81x = 124,621.03 × 124,621.03
4. Step 4: Simplify right side
   78,662.81x = 15,530,401,429.81
5. Step 5: Solve for x
   x = 15,530,401,429.81/78,662.81
6. Step 6: Final answer
   x = 197,430.03