Finding the Third Proportional to 611,889 and 1,307,856

Step by Step Solution

1. Step 1: Write the proportion equation
   611,889 : 1,307,856 = 1,307,856 : x
2. Step 2: Convert to fraction form
   611,889/1,307,856 = 1,307,856/x
3. Step 3: Cross multiply
   611,889x = 1,307,856 × 1,307,856
4. Step 4: Simplify right side
   611,889x = 1,710,487,316,736
5. Step 5: Solve for x
   x = 1,710,487,316,736/611,889
6. Step 6: Final answer
   x = 2,795,420.93