Finding the Third Proportional to 1,489,680 and 3,158,109

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489,680 : 3,158,109 = 3,158,109 : x
2. Step 2: Convert to fraction form
   1,489,680/3,158,109 = 3,158,109/x
3. Step 3: Cross multiply
   1,489,680x = 3,158,109 × 3,158,109
4. Step 4: Simplify right side
   1,489,680x = 9,973,652,455,881
5. Step 5: Solve for x
   x = 9,973,652,455,881/1,489,680
6. Step 6: Final answer
   x = 6,695,164.37