Finding the Third Proportional to 1,705,868 and 3,621,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705,868 : 3,621,688 = 3,621,688 : x
2. Step 2: Convert to fraction form
   1,705,868/3,621,688 = 3,621,688/x
3. Step 3: Cross multiply
   1,705,868x = 3,621,688 × 3,621,688
4. Step 4: Simplify right side
   1,705,868x = 13,116,623,969,344
5. Step 5: Solve for x
   x = 13,116,623,969,344/1,705,868
6. Step 6: Final answer
   x = 7,689,120.12