Finding the Third Proportional to 612,117 and 860,464.50

Step by Step Solution

1. Step 1: Write the proportion equation
   612,117 : 860,464.50 = 860,464.50 : x
2. Step 2: Convert to fraction form
   612,117/860,464.50 = 860,464.50/x
3. Step 3: Cross multiply
   612,117x = 860,464.50 × 860,464.50
4. Step 4: Simplify right side
   612,117x = 740,399,155,760.25
5. Step 5: Solve for x
   x = 740,399,155,760.25/612,117
6. Step 6: Final answer
   x = 1,209,571.30