Finding the Third Proportional to 1,655,664 and 3,621,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655,664 : 3,621,312 = 3,621,312 : x
2. Step 2: Convert to fraction form
   1,655,664/3,621,312 = 3,621,312/x
3. Step 3: Cross multiply
   1,655,664x = 3,621,312 × 3,621,312
4. Step 4: Simplify right side
   1,655,664x = 13,113,900,601,344
5. Step 5: Solve for x
   x = 13,113,900,601,344/1,655,664
6. Step 6: Final answer
   x = 7,920,629.19