Finding the Third Proportional to 1,316,639 and 1,966,345

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316,639 : 1,966,345 = 1,966,345 : x
2. Step 2: Convert to fraction form
   1,316,639/1,966,345 = 1,966,345/x
3. Step 3: Cross multiply
   1,316,639x = 1,966,345 × 1,966,345
4. Step 4: Simplify right side
   1,316,639x = 3,866,512,659,025
5. Step 5: Solve for x
   x = 3,866,512,659,025/1,316,639
6. Step 6: Final answer
   x = 2,936,653.60