Finding the Third Proportional to 686,780 and 1,010,307

Step by Step Solution

1. Step 1: Write the proportion equation
   686,780 : 1,010,307 = 1,010,307 : x
2. Step 2: Convert to fraction form
   686,780/1,010,307 = 1,010,307/x
3. Step 3: Cross multiply
   686,780x = 1,010,307 × 1,010,307
4. Step 4: Simplify right side
   686,780x = 1,020,720,234,249
5. Step 5: Solve for x
   x = 1,020,720,234,249/686,780
6. Step 6: Final answer
   x = 1,486,240.48