Finding the Third Proportional to 863,460 and 1,207,764

Step by Step Solution

1. Step 1: Write the proportion equation
   863,460 : 1,207,764 = 1,207,764 : x
2. Step 2: Convert to fraction form
   863,460/1,207,764 = 1,207,764/x
3. Step 3: Cross multiply
   863,460x = 1,207,764 × 1,207,764
4. Step 4: Simplify right side
   863,460x = 1,458,693,879,696
5. Step 5: Solve for x
   x = 1,458,693,879,696/863,460
6. Step 6: Final answer
   x = 1,689,358.95