Finding the Third Proportional to 448,458 and 655,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   448,458 : 655,417.50 = 655,417.50 : x
2. Step 2: Convert to fraction form
   448,458/655,417.50 = 655,417.50/x
3. Step 3: Cross multiply
   448,458x = 655,417.50 × 655,417.50
4. Step 4: Simplify right side
   448,458x = 429,572,099,306.25
5. Step 5: Solve for x
   x = 429,572,099,306.25/448,458
6. Step 6: Final answer
   x = 957,887.02