Finding the Third Proportional to 559,434 and 860,386.50

Step by Step Solution

1. Step 1: Write the proportion equation
   559,434 : 860,386.50 = 860,386.50 : x
2. Step 2: Convert to fraction form
   559,434/860,386.50 = 860,386.50/x
3. Step 3: Cross multiply
   559,434x = 860,386.50 × 860,386.50
4. Step 4: Simplify right side
   559,434x = 740,264,929,382.25
5. Step 5: Solve for x
   x = 740,264,929,382.25/559,434
6. Step 6: Final answer
   x = 1,323,239.08