Finding the Third Proportional to 1,249,807 and 1,866,531

Step by Step Solution

1. Step 1: Write the proportion equation
   1,249,807 : 1,866,531 = 1,866,531 : x
2. Step 2: Convert to fraction form
   1,249,807/1,866,531 = 1,866,531/x
3. Step 3: Cross multiply
   1,249,807x = 1,866,531 × 1,866,531
4. Step 4: Simplify right side
   1,249,807x = 3,483,937,973,961
5. Step 5: Solve for x
   x = 3,483,937,973,961/1,249,807
6. Step 6: Final answer
   x = 2,787,580.78