Finding the Third Proportional to 259,402.50 and 558,828

Step by Step Solution

1. Step 1: Write the proportion equation
   259,402.50 : 558,828 = 558,828 : x
2. Step 2: Convert to fraction form
   259,402.50/558,828 = 558,828/x
3. Step 3: Cross multiply
   259,402.50x = 558,828 × 558,828
4. Step 4: Simplify right side
   259,402.50x = 312,288,733,584
5. Step 5: Solve for x
   x = 312,288,733,584/259,402.50
6. Step 6: Final answer
   x = 1,203,877.12