Finding the Third Proportional to 1,249,789 and 1,866,508

Step by Step Solution

1. Step 1: Write the proportion equation
   1,249,789 : 1,866,508 = 1,866,508 : x
2. Step 2: Convert to fraction form
   1,249,789/1,866,508 = 1,866,508/x
3. Step 3: Cross multiply
   1,249,789x = 1,866,508 × 1,866,508
4. Step 4: Simplify right side
   1,249,789x = 3,483,852,114,064
5. Step 5: Solve for x
   x = 3,483,852,114,064/1,249,789
6. Step 6: Final answer
   x = 2,787,552.23