Finding the Third Proportional to 684,670 and 1,390,076

Step by Step Solution

1. Step 1: Write the proportion equation
   684,670 : 1,390,076 = 1,390,076 : x
2. Step 2: Convert to fraction form
   684,670/1,390,076 = 1,390,076/x
3. Step 3: Cross multiply
   684,670x = 1,390,076 × 1,390,076
4. Step 4: Simplify right side
   684,670x = 1,932,311,285,776
5. Step 5: Solve for x
   x = 1,932,311,285,776/684,670
6. Step 6: Final answer
   x = 2,822,252.01