Finding the Third Proportional to 1,665,585 and 3,616,564.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665,585 : 3,616,564.50 = 3,616,564.50 : x
2. Step 2: Convert to fraction form
   1,665,585/3,616,564.50 = 3,616,564.50/x
3. Step 3: Cross multiply
   1,665,585x = 3,616,564.50 × 3,616,564.50
4. Step 4: Simplify right side
   1,665,585x = 13,079,538,782,660.25
5. Step 5: Solve for x
   x = 13,079,538,782,660.25/1,665,585
6. Step 6: Final answer
   x = 7,852,819.75