Finding the Third Proportional to 311,859 and 482,692.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,859 : 482,692.50 = 482,692.50 : x
2. Step 2: Convert to fraction form
   311,859/482,692.50 = 482,692.50/x
3. Step 3: Cross multiply
   311,859x = 482,692.50 × 482,692.50
4. Step 4: Simplify right side
   311,859x = 232,992,049,556.25
5. Step 5: Solve for x
   x = 232,992,049,556.25/311,859
6. Step 6: Final answer
   x = 747,107.02