Finding the Third Proportional to 135,252 and 289,264.50

Step by Step Solution

1. Step 1: Write the proportion equation
   135,252 : 289,264.50 = 289,264.50 : x
2. Step 2: Convert to fraction form
   135,252/289,264.50 = 289,264.50/x
3. Step 3: Cross multiply
   135,252x = 289,264.50 × 289,264.50
4. Step 4: Simplify right side
   135,252x = 83,673,950,960.25
5. Step 5: Solve for x
   x = 83,673,950,960.25/135,252
6. Step 6: Final answer
   x = 618,652.23