Finding the Third Proportional to 448,406 and 655,364

Step by Step Solution

1. Step 1: Write the proportion equation
   448,406 : 655,364 = 655,364 : x
2. Step 2: Convert to fraction form
   448,406/655,364 = 655,364/x
3. Step 3: Cross multiply
   448,406x = 655,364 × 655,364
4. Step 4: Simplify right side
   448,406x = 429,501,972,496
5. Step 5: Solve for x
   x = 429,501,972,496/448,406
6. Step 6: Final answer
   x = 957,841.72