Finding the Third Proportional to 791,426 and 1,866,389

Step by Step Solution

1. Step 1: Write the proportion equation
   791,426 : 1,866,389 = 1,866,389 : x
2. Step 2: Convert to fraction form
   791,426/1,866,389 = 1,866,389/x
3. Step 3: Cross multiply
   791,426x = 1,866,389 × 1,866,389
4. Step 4: Simplify right side
   791,426x = 3,483,407,899,321
5. Step 5: Solve for x
   x = 3,483,407,899,321/791,426
6. Step 6: Final answer
   x = 4,401,432.22