Finding the Third Proportional to 338,598.50 and 705,221

Step by Step Solution

1. Step 1: Write the proportion equation
   338,598.50 : 705,221 = 705,221 : x
2. Step 2: Convert to fraction form
   338,598.50/705,221 = 705,221/x
3. Step 3: Cross multiply
   338,598.50x = 705,221 × 705,221
4. Step 4: Simplify right side
   338,598.50x = 497,336,658,841
5. Step 5: Solve for x
   x = 497,336,658,841/338,598.50
6. Step 6: Final answer
   x = 1,468,809.40