Finding the Third Proportional to 435,299 and 616,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   435,299 : 616,498.50 = 616,498.50 : x
2. Step 2: Convert to fraction form
   435,299/616,498.50 = 616,498.50/x
3. Step 3: Cross multiply
   435,299x = 616,498.50 × 616,498.50
4. Step 4: Simplify right side
   435,299x = 380,070,400,502.25
5. Step 5: Solve for x
   x = 380,070,400,502.25/435,299
6. Step 6: Final answer
   x = 873,124.91