Finding the Third Proportional to 434,790 and 571,747.50

Step by Step Solution

1. Step 1: Write the proportion equation
   434,790 : 571,747.50 = 571,747.50 : x
2. Step 2: Convert to fraction form
   434,790/571,747.50 = 571,747.50/x
3. Step 3: Cross multiply
   434,790x = 571,747.50 × 571,747.50
4. Step 4: Simplify right side
   434,790x = 326,895,203,756.25
5. Step 5: Solve for x
   x = 326,895,203,756.25/434,790
6. Step 6: Final answer
   x = 751,846.19