Finding the Third Proportional to 338,518.50 and 535,521

Step by Step Solution

1. Step 1: Write the proportion equation
   338,518.50 : 535,521 = 535,521 : x
2. Step 2: Convert to fraction form
   338,518.50/535,521 = 535,521/x
3. Step 3: Cross multiply
   338,518.50x = 535,521 × 535,521
4. Step 4: Simplify right side
   338,518.50x = 286,782,741,441
5. Step 5: Solve for x
   x = 286,782,741,441/338,518.50
6. Step 6: Final answer
   x = 847,170.07