Finding the Third Proportional to 686,900 and 1,010,487

Step by Step Solution

1. Step 1: Write the proportion equation
   686,900 : 1,010,487 = 1,010,487 : x
2. Step 2: Convert to fraction form
   686,900/1,010,487 = 1,010,487/x
3. Step 3: Cross multiply
   686,900x = 1,010,487 × 1,010,487
4. Step 4: Simplify right side
   686,900x = 1,021,083,977,169
5. Step 5: Solve for x
   x = 1,021,083,977,169/686,900
6. Step 6: Final answer
   x = 1,486,510.38