Finding the Third Proportional to 117,261 and 238,660.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,261 : 238,660.50 = 238,660.50 : x
2. Step 2: Convert to fraction form
   117,261/238,660.50 = 238,660.50/x
3. Step 3: Cross multiply
   117,261x = 238,660.50 × 238,660.50
4. Step 4: Simplify right side
   117,261x = 56,958,834,260.25
5. Step 5: Solve for x
   x = 56,958,834,260.25/117,261
6. Step 6: Final answer
   x = 485,744.06