Finding the Third Proportional to 847,128 and 1,860,144

Step by Step Solution

1. Step 1: Write the proportion equation
   847,128 : 1,860,144 = 1,860,144 : x
2. Step 2: Convert to fraction form
   847,128/1,860,144 = 1,860,144/x
3. Step 3: Cross multiply
   847,128x = 1,860,144 × 1,860,144
4. Step 4: Simplify right side
   847,128x = 3,460,135,700,736
5. Step 5: Solve for x
   x = 3,460,135,700,736/847,128
6. Step 6: Final answer
   x = 4,084,548.85