Finding the Third Proportional to 397,312.50 and 860,616

Step by Step Solution

1. Step 1: Write the proportion equation
   397,312.50 : 860,616 = 860,616 : x
2. Step 2: Convert to fraction form
   397,312.50/860,616 = 860,616/x
3. Step 3: Cross multiply
   397,312.50x = 860,616 × 860,616
4. Step 4: Simplify right side
   397,312.50x = 740,659,899,456
5. Step 5: Solve for x
   x = 740,659,899,456/397,312.50
6. Step 6: Final answer
   x = 1,864,174.67