Finding the Third Proportional to 858,192 and 1,851,280

Step by Step Solution

1. Step 1: Write the proportion equation
   858,192 : 1,851,280 = 1,851,280 : x
2. Step 2: Convert to fraction form
   858,192/1,851,280 = 1,851,280/x
3. Step 3: Cross multiply
   858,192x = 1,851,280 × 1,851,280
4. Step 4: Simplify right side
   858,192x = 3,427,237,638,400
5. Step 5: Solve for x
   x = 3,427,237,638,400/858,192
6. Step 6: Final answer
   x = 3,993,555.80