Finding the Third Proportional to 356,841 and 521,860.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,841 : 521,860.50 = 521,860.50 : x
2. Step 2: Convert to fraction form
   356,841/521,860.50 = 521,860.50/x
3. Step 3: Cross multiply
   356,841x = 521,860.50 × 521,860.50
4. Step 4: Simplify right side
   356,841x = 272,338,381,460.25
5. Step 5: Solve for x
   x = 272,338,381,460.25/356,841
6. Step 6: Final answer
   x = 763,192.52