Finding the Third Proportional to 124,300.20 and 197,137.55

Step by Step Solution

1. Step 1: Write the proportion equation
   124,300.20 : 197,137.55 = 197,137.55 : x
2. Step 2: Convert to fraction form
   124,300.20/197,137.55 = 197,137.55/x
3. Step 3: Cross multiply
   124,300.20x = 197,137.55 × 197,137.55
4. Step 4: Simplify right side
   124,300.20x = 38,863,212,387.89
5. Step 5: Solve for x
   x = 38,863,212,387.89/124,300.20
6. Step 6: Final answer
   x = 312,656.08