Finding the Third Proportional to 356,829 and 521,845.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,829 : 521,845.50 = 521,845.50 : x
2. Step 2: Convert to fraction form
   356,829/521,845.50 = 521,845.50/x
3. Step 3: Cross multiply
   356,829x = 521,845.50 × 521,845.50
4. Step 4: Simplify right side
   356,829x = 272,322,725,870.25
5. Step 5: Solve for x
   x = 272,322,725,870.25/356,829
6. Step 6: Final answer
   x = 763,174.31