Finding the Third Proportional to 231,407.50 and 349,578

Step by Step Solution

1. Step 1: Write the proportion equation
   231,407.50 : 349,578 = 349,578 : x
2. Step 2: Convert to fraction form
   231,407.50/349,578 = 349,578/x
3. Step 3: Cross multiply
   231,407.50x = 349,578 × 349,578
4. Step 4: Simplify right side
   231,407.50x = 122,204,778,084
5. Step 5: Solve for x
   x = 122,204,778,084/231,407.50
6. Step 6: Final answer
   x = 528,093.42