Finding the Third Proportional to 686,616 and 1,005,344

Step by Step Solution

1. Step 1: Write the proportion equation
   686,616 : 1,005,344 = 1,005,344 : x
2. Step 2: Convert to fraction form
   686,616/1,005,344 = 1,005,344/x
3. Step 3: Cross multiply
   686,616x = 1,005,344 × 1,005,344
4. Step 4: Simplify right side
   686,616x = 1,010,716,558,336
5. Step 5: Solve for x
   x = 1,010,716,558,336/686,616
6. Step 6: Final answer
   x = 1,472,025.93