Finding the Third Proportional to 904,564 and 1,406,640

Step by Step Solution

1. Step 1: Write the proportion equation
   904,564 : 1,406,640 = 1,406,640 : x
2. Step 2: Convert to fraction form
   904,564/1,406,640 = 1,406,640/x
3. Step 3: Cross multiply
   904,564x = 1,406,640 × 1,406,640
4. Step 4: Simplify right side
   904,564x = 1,978,636,089,600
5. Step 5: Solve for x
   x = 1,978,636,089,600/904,564
6. Step 6: Final answer
   x = 2,187,392.04