Finding the Third Proportional to 611,907.50 and 860,179

Step by Step Solution

1. Step 1: Write the proportion equation
   611,907.50 : 860,179 = 860,179 : x
2. Step 2: Convert to fraction form
   611,907.50/860,179 = 860,179/x
3. Step 3: Cross multiply
   611,907.50x = 860,179 × 860,179
4. Step 4: Simplify right side
   611,907.50x = 739,907,912,041
5. Step 5: Solve for x
   x = 739,907,912,041/611,907.50
6. Step 6: Final answer
   x = 1,209,182.62