Finding the Third Proportional to 686,856 and 1,050,790.50

Step by Step Solution

1. Step 1: Write the proportion equation
   686,856 : 1,050,790.50 = 1,050,790.50 : x
2. Step 2: Convert to fraction form
   686,856/1,050,790.50 = 1,050,790.50/x
3. Step 3: Cross multiply
   686,856x = 1,050,790.50 × 1,050,790.50
4. Step 4: Simplify right side
   686,856x = 1,104,160,674,890.25
5. Step 5: Solve for x
   x = 1,104,160,674,890.25/686,856
6. Step 6: Final answer
   x = 1,607,557.73