Finding the Third Proportional to 397,737 and 864,634.50

Step by Step Solution

1. Step 1: Write the proportion equation
   397,737 : 864,634.50 = 864,634.50 : x
2. Step 2: Convert to fraction form
   397,737/864,634.50 = 864,634.50/x
3. Step 3: Cross multiply
   397,737x = 864,634.50 × 864,634.50
4. Step 4: Simplify right side
   397,737x = 747,592,818,590.25
5. Step 5: Solve for x
   x = 747,592,818,590.25/397,737
6. Step 6: Final answer
   x = 1,879,615.97