Finding the Third Proportional to 290,227 and 448,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,227 : 448,474.50 = 448,474.50 : x
2. Step 2: Convert to fraction form
   290,227/448,474.50 = 448,474.50/x
3. Step 3: Cross multiply
   290,227x = 448,474.50 × 448,474.50
4. Step 4: Simplify right side
   290,227x = 201,129,377,150.25
5. Step 5: Solve for x
   x = 201,129,377,150.25/290,227
6. Step 6: Final answer
   x = 693,007.12