Finding the Third Proportional to 686,620 and 1,005,350

Step by Step Solution

1. Step 1: Write the proportion equation
   686,620 : 1,005,350 = 1,005,350 : x
2. Step 2: Convert to fraction form
   686,620/1,005,350 = 1,005,350/x
3. Step 3: Cross multiply
   686,620x = 1,005,350 × 1,005,350
4. Step 4: Simplify right side
   686,620x = 1,010,728,622,500
5. Step 5: Solve for x
   x = 1,010,728,622,500/686,620
6. Step 6: Final answer
   x = 1,472,034.93