Finding the Third Proportional to 686,931 and 1,010,520

Step by Step Solution

1. Step 1: Write the proportion equation
   686,931 : 1,010,520 = 1,010,520 : x
2. Step 2: Convert to fraction form
   686,931/1,010,520 = 1,010,520/x
3. Step 3: Cross multiply
   686,931x = 1,010,520 × 1,010,520
4. Step 4: Simplify right side
   686,931x = 1,021,150,670,400
5. Step 5: Solve for x
   x = 1,021,150,670,400/686,931
6. Step 6: Final answer
   x = 1,486,540.38