Finding the Third Proportional to 686,920 and 1,010,516

Step by Step Solution

1. Step 1: Write the proportion equation
   686,920 : 1,010,516 = 1,010,516 : x
2. Step 2: Convert to fraction form
   686,920/1,010,516 = 1,010,516/x
3. Step 3: Cross multiply
   686,920x = 1,010,516 × 1,010,516
4. Step 4: Simplify right side
   686,920x = 1,021,142,586,256
5. Step 5: Solve for x
   x = 1,021,142,586,256/686,920
6. Step 6: Final answer
   x = 1,486,552.42