Finding the Third Proportional to 113,790.50 and 234,931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,790.50 : 234,931.50 = 234,931.50 : x
2. Step 2: Convert to fraction form
   113,790.50/234,931.50 = 234,931.50/x
3. Step 3: Cross multiply
   113,790.50x = 234,931.50 × 234,931.50
4. Step 4: Simplify right side
   113,790.50x = 55,192,809,692.25
5. Step 5: Solve for x
   x = 55,192,809,692.25/113,790.50
6. Step 6: Final answer
   x = 485,038.82