Finding the Third Proportional to 343,953 and 521,122.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,953 : 521,122.50 = 521,122.50 : x
2. Step 2: Convert to fraction form
   343,953/521,122.50 = 521,122.50/x
3. Step 3: Cross multiply
   343,953x = 521,122.50 × 521,122.50
4. Step 4: Simplify right side
   343,953x = 271,568,660,006.25
5. Step 5: Solve for x
   x = 271,568,660,006.25/343,953
6. Step 6: Final answer
   x = 789,551.65