Finding the Third Proportional to 686,751 and 1,062,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   686,751 : 1,062,490.50 = 1,062,490.50 : x
2. Step 2: Convert to fraction form
   686,751/1,062,490.50 = 1,062,490.50/x
3. Step 3: Cross multiply
   686,751x = 1,062,490.50 × 1,062,490.50
4. Step 4: Simplify right side
   686,751x = 1,128,886,062,590.25
5. Step 5: Solve for x
   x = 1,128,886,062,590.25/686,751
6. Step 6: Final answer
   x = 1,643,806.94