Finding the Third Proportional to 863,404 and 1,307,148

Step by Step Solution

1. Step 1: Write the proportion equation
   863,404 : 1,307,148 = 1,307,148 : x
2. Step 2: Convert to fraction form
   863,404/1,307,148 = 1,307,148/x
3. Step 3: Cross multiply
   863,404x = 1,307,148 × 1,307,148
4. Step 4: Simplify right side
   863,404x = 1,708,635,893,904
5. Step 5: Solve for x
   x = 1,708,635,893,904/863,404
6. Step 6: Final answer
   x = 1,978,952.95