Finding the Third Proportional to 124,836 and 259,864.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,836 : 259,864.50 = 259,864.50 : x
2. Step 2: Convert to fraction form
   124,836/259,864.50 = 259,864.50/x
3. Step 3: Cross multiply
   124,836x = 259,864.50 × 259,864.50
4. Step 4: Simplify right side
   124,836x = 67,529,558,360.25
5. Step 5: Solve for x
   x = 67,529,558,360.25/124,836
6. Step 6: Final answer
   x = 540,946.19