Finding the Third Proportional to 684,644 and 1,064,280

Step by Step Solution

1. Step 1: Write the proportion equation
   684,644 : 1,064,280 = 1,064,280 : x
2. Step 2: Convert to fraction form
   684,644/1,064,280 = 1,064,280/x
3. Step 3: Cross multiply
   684,644x = 1,064,280 × 1,064,280
4. Step 4: Simplify right side
   684,644x = 1,132,691,918,400
5. Step 5: Solve for x
   x = 1,132,691,918,400/684,644
6. Step 6: Final answer
   x = 1,654,424.66