Finding the Third Proportional to 847,123 and 1,860,131

Step by Step Solution

1. Step 1: Write the proportion equation
   847,123 : 1,860,131 = 1,860,131 : x
2. Step 2: Convert to fraction form
   847,123/1,860,131 = 1,860,131/x
3. Step 3: Cross multiply
   847,123x = 1,860,131 × 1,860,131
4. Step 4: Simplify right side
   847,123x = 3,460,087,337,161
5. Step 5: Solve for x
   x = 3,460,087,337,161/847,123
6. Step 6: Final answer
   x = 4,084,515.87