Finding the Third Proportional to 397,360.50 and 865,656

Step by Step Solution

1. Step 1: Write the proportion equation
   397,360.50 : 865,656 = 865,656 : x
2. Step 2: Convert to fraction form
   397,360.50/865,656 = 865,656/x
3. Step 3: Cross multiply
   397,360.50x = 865,656 × 865,656
4. Step 4: Simplify right side
   397,360.50x = 749,360,310,336
5. Step 5: Solve for x
   x = 749,360,310,336/397,360.50
6. Step 6: Final answer
   x = 1,885,845.00