Finding the Third Proportional to 118,554 and 259,237.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,554 : 259,237.50 = 259,237.50 : x
2. Step 2: Convert to fraction form
   118,554/259,237.50 = 259,237.50/x
3. Step 3: Cross multiply
   118,554x = 259,237.50 × 259,237.50
4. Step 4: Simplify right side
   118,554x = 67,204,081,406.25
5. Step 5: Solve for x
   x = 67,204,081,406.25/118,554
6. Step 6: Final answer
   x = 566,864.73