Finding the Third Proportional to 381,708 and 591,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   381,708 : 591,331.50 = 591,331.50 : x
2. Step 2: Convert to fraction form
   381,708/591,331.50 = 591,331.50/x
3. Step 3: Cross multiply
   381,708x = 591,331.50 × 591,331.50
4. Step 4: Simplify right side
   381,708x = 349,672,942,892.25
5. Step 5: Solve for x
   x = 349,672,942,892.25/381,708
6. Step 6: Final answer
   x = 916,074.44