Finding the Third Proportional to 857,318 and 1,862,380

Step by Step Solution

1. Step 1: Write the proportion equation
   857,318 : 1,862,380 = 1,862,380 : x
2. Step 2: Convert to fraction form
   857,318/1,862,380 = 1,862,380/x
3. Step 3: Cross multiply
   857,318x = 1,862,380 × 1,862,380
4. Step 4: Simplify right side
   857,318x = 3,468,459,264,400
5. Step 5: Solve for x
   x = 3,468,459,264,400/857,318
6. Step 6: Final answer
   x = 4,045,709.14