Finding the Third Proportional to 670,230 and 1,387,116

Step by Step Solution

1. Step 1: Write the proportion equation
   670,230 : 1,387,116 = 1,387,116 : x
2. Step 2: Convert to fraction form
   670,230/1,387,116 = 1,387,116/x
3. Step 3: Cross multiply
   670,230x = 1,387,116 × 1,387,116
4. Step 4: Simplify right side
   670,230x = 1,924,090,797,456
5. Step 5: Solve for x
   x = 1,924,090,797,456/670,230
6. Step 6: Final answer
   x = 2,870,791.81