Finding the Third Proportional to 78,410.72 and 124,766.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,410.72 : 124,766.81 = 124,766.81 : x
2. Step 2: Convert to fraction form
   78,410.72/124,766.81 = 124,766.81/x
3. Step 3: Cross multiply
   78,410.72x = 124,766.81 × 124,766.81
4. Step 4: Simplify right side
   78,410.72x = 15,566,757,501.41
5. Step 5: Solve for x
   x = 15,566,757,501.41/78,410.72
6. Step 6: Final answer
   x = 198,528.44