Finding the Third Proportional to 259,612.50 and 559,401

Step by Step Solution

1. Step 1: Write the proportion equation
   259,612.50 : 559,401 = 559,401 : x
2. Step 2: Convert to fraction form
   259,612.50/559,401 = 559,401/x
3. Step 3: Cross multiply
   259,612.50x = 559,401 × 559,401
4. Step 4: Simplify right side
   259,612.50x = 312,929,478,801
5. Step 5: Solve for x
   x = 312,929,478,801/259,612.50
6. Step 6: Final answer
   x = 1,205,371.39