Finding the Third Proportional to 850,320 and 1,866,507

Step by Step Solution

1. Step 1: Write the proportion equation
   850,320 : 1,866,507 = 1,866,507 : x
2. Step 2: Convert to fraction form
   850,320/1,866,507 = 1,866,507/x
3. Step 3: Cross multiply
   850,320x = 1,866,507 × 1,866,507
4. Step 4: Simplify right side
   850,320x = 3,483,848,381,049
5. Step 5: Solve for x
   x = 3,483,848,381,049/850,320
6. Step 6: Final answer
   x = 4,097,102.72