Finding the Third Proportional to 543,314 and 860,123

Step by Step Solution

1. Step 1: Write the proportion equation
   543,314 : 860,123 = 860,123 : x
2. Step 2: Convert to fraction form
   543,314/860,123 = 860,123/x
3. Step 3: Cross multiply
   543,314x = 860,123 × 860,123
4. Step 4: Simplify right side
   543,314x = 739,811,575,129
5. Step 5: Solve for x
   x = 739,811,575,129/543,314
6. Step 6: Final answer
   x = 1,361,664.85