Finding the Third Proportional to 538,434 and 833,613.75

Step by Step Solution

1. Step 1: Write the proportion equation
   538,434 : 833,613.75 = 833,613.75 : x
2. Step 2: Convert to fraction form
   538,434/833,613.75 = 833,613.75/x
3. Step 3: Cross multiply
   538,434x = 833,613.75 × 833,613.75
4. Step 4: Simplify right side
   538,434x = 694,911,884,189.06
5. Step 5: Solve for x
   x = 694,911,884,189.06/538,434
6. Step 6: Final answer
   x = 1,290,616.65