Finding the Third Proportional to 686,888 and 1,010,466

Step by Step Solution

1. Step 1: Write the proportion equation
   686,888 : 1,010,466 = 1,010,466 : x
2. Step 2: Convert to fraction form
   686,888/1,010,466 = 1,010,466/x
3. Step 3: Cross multiply
   686,888x = 1,010,466 × 1,010,466
4. Step 4: Simplify right side
   686,888x = 1,021,041,537,156
5. Step 5: Solve for x
   x = 1,021,041,537,156/686,888
6. Step 6: Final answer
   x = 1,486,474.56