Finding the Third Proportional to 356,818.50 and 521,832

Step by Step Solution

1. Step 1: Write the proportion equation
   356,818.50 : 521,832 = 521,832 : x
2. Step 2: Convert to fraction form
   356,818.50/521,832 = 521,832/x
3. Step 3: Cross multiply
   356,818.50x = 521,832 × 521,832
4. Step 4: Simplify right side
   356,818.50x = 272,308,636,224
5. Step 5: Solve for x
   x = 272,308,636,224/356,818.50
6. Step 6: Final answer
   x = 763,157.28