Finding the Third Proportional to 290,528.50 and 622,529

Step by Step Solution

1. Step 1: Write the proportion equation
   290,528.50 : 622,529 = 622,529 : x
2. Step 2: Convert to fraction form
   290,528.50/622,529 = 622,529/x
3. Step 3: Cross multiply
   290,528.50x = 622,529 × 622,529
4. Step 4: Simplify right side
   290,528.50x = 387,542,355,841
5. Step 5: Solve for x
   x = 387,542,355,841/290,528.50
6. Step 6: Final answer
   x = 1,333,921.99