Finding the Third Proportional to 445,003.50 and 690,327

Step by Step Solution

1. Step 1: Write the proportion equation
   445,003.50 : 690,327 = 690,327 : x
2. Step 2: Convert to fraction form
   445,003.50/690,327 = 690,327/x
3. Step 3: Cross multiply
   445,003.50x = 690,327 × 690,327
4. Step 4: Simplify right side
   445,003.50x = 476,551,366,929
5. Step 5: Solve for x
   x = 476,551,366,929/445,003.50
6. Step 6: Final answer
   x = 1,070,893.53