Finding the Third Proportional to 686,766 and 1,050,565.50

Step by Step Solution

1. Step 1: Write the proportion equation
   686,766 : 1,050,565.50 = 1,050,565.50 : x
2. Step 2: Convert to fraction form
   686,766/1,050,565.50 = 1,050,565.50/x
3. Step 3: Cross multiply
   686,766x = 1,050,565.50 × 1,050,565.50
4. Step 4: Simplify right side
   686,766x = 1,103,687,869,790.25
5. Step 5: Solve for x
   x = 1,103,687,869,790.25/686,766
6. Step 6: Final answer
   x = 1,607,079.95