Finding the Third Proportional to 1,642,905 and 3,528,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642,905 : 3,528,688 = 3,528,688 : x
2. Step 2: Convert to fraction form
   1,642,905/3,528,688 = 3,528,688/x
3. Step 3: Cross multiply
   1,642,905x = 3,528,688 × 3,528,688
4. Step 4: Simplify right side
   1,642,905x = 12,451,639,001,344
5. Step 5: Solve for x
   x = 12,451,639,001,344/1,642,905
6. Step 6: Final answer
   x = 7,579,037.74